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About Us Teton is redefining the role of healthcare workers through cutting-edge AI technology and a great product experience. As populations get older and staff shortages grow, healthcare systems are under pressure. Our mission is to decrease the cost of healthcare while improving the quality of care. Our product enables care teams to intervene, prevent and operate more efficiently. Our ambient sensors in resident rooms capture activity, sleep, respiration, gait and more. These signals are used both to react fast to risk events, like falls, and for long-term health analysis that care teams can act on. Teton is scaling fast, operating in the Nordics, UK, DACH and US. We raised a $20M Series A. Expect travel to the US to meet users and team members. We focus relentlessly on product excellence and user experience, deploying solutions at speed that make a tangible difference for carers. We are an aspiring meritocracy biased towards action, always striving to raise the bar. If you are driven by impact, speed and leveling up, this might be the place for you. If you are looking for a 9-17 job, perform best with structure and struggle dealing with unknowns, this is not for you. We believe close collaboration between a hard-working, high-agency team enables the fastest and most efficient iteration cycles, helping us build an impactful product that healthcare professionals truly love to use. The Job We're looking for a talented and driven Product Engineer to own customer-facing features from the first conversation with a care team to the feature running in production. Care workers rely on our product during every shift and care managers use it to follow up on their residents, on mobile and on the web. This isn't a ticket-taking role. You'll talk to users, cut scope, build across the whole stack, and check afterwards whether what you shipped actually made a shift easier. Your goal is to shrink the time from a customer request to a deployed solution, without cutting corners on reliability or on the privacy of residents' health data. In this role, you will focus on: Feature Development: Own features end-to-end, from design discussions through implementation to production rollout across multiple markets and languages, on the web app, the mobile app and the APIs behind them. Customer Insight: Talk to care staff and our customer success team every week, visit care facilities, and turn what you hear into clearly scoped product changes. Come with ideas, sketch the solution, and push it forward. Fast Iteration: Break large designs and features into small shippable pieces. Get MVPs in front of users quickly, measure how they're used, and iterate or kill them. Backend & APIs: Design and build the APIs, data models and services your features need. You will not just consume APIs, you will help shape, improve and fix the systems behind them. Quality, Privacy & Safety: Ship with care for health data: sensible access control, auditability and privacy by default. Build test coverage and use staged rollouts so new features never get in the way of the alerts care teams depend on. Qualifications Strong TypeScript skills: this is the language for everything we build. Solid production experience with React on the web and/or React Native. Comfortable working across the stack: you've built backend APIs and worked with relational databases (e.g. Postgres), not just UI. Great product taste and a keen eye for UX. You work well with designers and can make sensible design decisions yourself when needed. Comfortable talking directly with non-technical users and turning messy feedback into concrete decisions. Previous startup experience and/or shipping a product where you owned the outcome, from idea to adoption. Strong problem-solving skills and the ability to work both independently and in a team. Nice to Have Experience with React Native and Expo in production. AWS or equivalent cloud platform experience. Familiarity with TanStack, real-time systems or push notifications. Experience with health data or other regulated, privacy-sensitive domains (e.g. GDPR). Experience shipping products across multiple markets and languages. What We Offer Participation in our warrant program (stock options). A small team where your decisions directly shape the product. Work on software that healthcare workers depend on every day, the impact is tangible and immediate. Join Our Team We're looking for individuals who share our vision and value ownership and entrepreneurship over a conventional job. At Teton, you'll have the chance to make a real impact with your work. If you're ready for more than just a job, come aboard and be part of our mission to transform healthcare. Find more English Speaking Jobs in United Kingdom on Arbeitnow

Software Engineer - Customer Operations Platform Hybrid in London, UK We're looking for a software engineer iwoca's operational tools and processes are a competitive advantage, allowing us to give great customer service, manage risk, and get money into our customers' hands as quickly as possible. You'll join our growing Customer Operations Platform team to help improve the systems that power these processes, building tailored flows for our Operations teams, automating processes using AI, using ML models to make smarter decisions, and improving the reliability of our communication services. You'll work closely with our Operations teams, getting user feedback and input on requirements from users working in the same building, and seeing the impact of your changes on the people you work with. The company Small businesses move fast. Opportunities often don't wait, and cash flow pressures can appear overnight. To keep going, and growing, SMEs need finance that's as flexible and responsive as they are. That's why we built iwoca. Our smart technology, data science and five-star customer service ensures business owners can act with the speed, confidence and control they need, exactly when it's needed. We've already cleared the way for 100,000 businesses with more than £4 billion in funding. Our passionate team is driven to help even more SMEs succeed, through access to better finance and other services that make running a business easier. Our ultimate mission is to support one million SMEs in their defining moments, creating lasting impact for the communities and economies they drive. The role As an engineer you'd take whole projects end to end, work out what' s actually needed, design it, build it and look after it in production. Responsibility and Autonomy: Take on complex projects that span many systems and many stakeholders — e.g. CRM, telephony, contact, and task management Build a strong understanding of the business context: how our ops teams actually work, how the processes you're automating are supposed to run, and what the people relying on your systems need from them. Do the detailed technical scoping and prototyping that tells us whether an idea is feasible before it reaches the roadmap. Delivery and Collaboration Take on complex coding and architecture problems with a high level of ambiguity and technical complexity. Write fluent technical documents and developer tickets distilling product requirements into clear and actionable technical work. Build relationships with key stakeholders including Operations Strategy, Credit Analysts, Account Managers, and Collections teams. Learning and Growth: Embody our growth mindset mentality by sharing new technologies and best practices within the team as well as more broadly across the company. The projects Here are some of the most recent problems we are solving: iwocaChat. Operations staff spend a large share of their day assembling context from multiple systems before they can help a customer. iwocaChat uses Claude to answer those questions directly, so staff spend their time on the customer rather than the lookup. Migrating the monolith. We are incrementally moving business logic out of our Django monolith into smaller, independently deployable services. Because it cuts across every domain, you'd be shaping service boundaries and ownership models that stick around long after the monolith is gone. Inbox messaging reworking. We are replacing our third party email inbox application with an inhouse solution, utilising AI to enable operations staff to automate the actions of our most frequent customer service enquiries. The requirements Essential: Experience developing and owning shared back end services that other engineering teams contribute to and depend on - being the trusted reviewer for their contributions and shaping how they build on top of your work. Familiarity with front-end technologies (React, TypeScript) and browser debugging. Experience building and shaping distributed systems in complex business domains. Ability to translate complex operational needs into technical architecture. Strong capability using AI tools to automate routine tasks and research, enabling greater focus on complex system architecture and critical technical decision-making. Bonus: Commercial experience with Python frameworks like Django. Experience with complex data architectures, including event-sourced data models. The salary We expect to pay from £70,000 - £90,000 for this role. But, we're open-minded, so definitely include your salary goals with your application. We routinely benchmark salaries against market rates, and run quarterly performance and salary reviews. The culture At iwoca, the best idea wins. We model our culture on independent thinking, challenging untested logic, and evidence-based decisions. We prioritise learning and growth, and give people the autonomy to develop in the direction that makes them most effective. We're a tech company and believe in the power of AI to help us work faster and better. We provide the infrastructure where every iwocan always has access to the best models and where those models have access to all of our data. We will help our people to learn how to use and grow with the new tools available to them. The offices We put a lot of effort into making iwoca a brilliant place to work: Offices in London, Leeds, Frankfurt, and Berlin with plenty of drinks and snacks. Events and clubs, like bingo, comedy nights, yoga classes, football, etc. The benefits Flexible working. Medical insurance from Vitality, including discounted gym membership. A private GP service (separate from Vitality) for you, your partner, and your dependents. 25 days' holiday, an extra day off for your birthday, the option to buy or sell an additional five days of annual leave, and unlimited unpaid leave. A one-month, fully paid sabbatical after four years. Instant access to external counselling and therapy sessions for team members that need emotional or mental health support. 3% pension contributions on total earnings. An employee equity incentive scheme. Generous parental leave and a nursery tax benefit scheme to help you save money. Electric car scheme and cycle to work scheme. Two company retreats a year, we've been to France, Italy, Spain, and further afield. And to make sure we all keep learning, we offer: A learning and development budget for everyone. Company-wide talks with internal and external speakers. Access to learning platforms like Treehouse. Useful links: See iwoca benefits & policies for detail and some additional benefits. See interview welcome pack to learn more about the process. Compensation: £70K – £90K • £70K – £90K Find more English Speaking Jobs in United Kingdom on Arbeitnow

Tech Lead - New Customers Team Hybrid in London, UK We're looking for a Tech Lead. You'll lead the engineering behind how new businesses become iwoca customers – the application they fill in, the checks they go through, and the offer they get. The company Small businesses move fast. Opportunities often don't wait, and cash flow pressures can appear overnight. To keep going, and growing, SMEs need finance that's as flexible and responsive as they are. That's why we built iwoca. Our smart technology, data science and five-star customer service ensures business owners can act with the speed, confidence and control they need, exactly when it's needed. We've already cleared the way for 100,000 businesses with more than £4 billion in funding. Our passionate team is driven to help even more SMEs succeed, through access to better finance and other services that make running a business easier. Our ultimate mission is to support one million SMEs in their defining moments, creating lasting impact for the communities and economies they drive. The team The New Customers team owns everything from a business's first application to a funded loan: the application flow, the logic that routes each application, the documents we ask customers for, and the models that set loan amounts and pricing. Its measure of success is the customer lifetime value it adds between sign-up and first loan. The team sets its own goals and direction. It brings together engineers, data scientists, and product and strategy people. It partners closely with credit risk on the trade-offs behind every lending decision. Knowledge sharing is central to how the team works, supported by regular forums to share findings, and dedicated research and development time. You'll lead two engineers and report to the head of engineering for iwoca's customer journey, from first application to repeat lending. The role As the Tech Lead, you'll spend most of your time building. The team is moving its offer logic out of a legacy monolith into multiple services.. The next phase is yours to lead. Autonomy and ownership. You'll shape what the team builds, decide how to build it, and own what goes live. You'll set its engineering roadmap, including what to pull out of the monolith, what to rewrite, and in what order. Technical depth. You'll design the services that turn the team's models and rules into a lending decision for each application. You'll keep them reliable in production and easy to change as the models evolve. Experimentation and learning. You'll build the systems that let data scientists test new models on live applications. Some experiments run for years, until each loan reaches the end of its term. You'll see the long-term results of the team's lending decisions. Leadership and growth. You'll line-manage and coach the team's engineers, setting context and helping them own projects end to end. As the team grows, you'll decide the skills and make-up it needs, and hire the engineers to match. The requirements Essential: Technical leadership . You've led a team of engineers for at least two years, including line management, while still remaining hands on. Backend engineering. You have deep expertise in at least one object-oriented language. You've designed, built, and run customer-facing backend systems in production. Commercial or product thinking. You take a business goal, get to the root of what's needed and why, and turn it into a technical plan. You can explain a trade-off in terms of what it means for customers and the business. AI leverage. You've built agentic workflows, or used AI to deliver engineering work you couldn't have done alone. You help your team do the same. You judge where it's useful. You check its output before it reaches production. Communication. You write and speak clearly, directly, and concisely. You adapt technical detail to your audience. Bonus: Lending or payments experience. You've worked in lending, payments, or another domain where engineering decisions carry financial risk. Experimentation. You've built systems that run controlled experiments, especially long-running ones. Legacy migration. You've moved business-critical logic out of a complex legacy monolith and kept everything that depends on it working. Working with data scientists. You've worked with data scientists from prototype to production, and know their work well enough to challenge it. Python stack. You've worked with Python, Django, and PostgreSQL. Frontend. You've built frontend features as well as backend services. The salary We expect to pay from £90,000 to £120,000 for this role. But, we're open-minded, so definitely include your salary goals with your application. We routinely benchmark salaries against market rates, and run quarterly performance and salary reviews. The culture At iwoca, the best idea wins. We model our culture on independent thinking, challenging untested logic, and evidence-based decisions. We prioritise learning and growth, and give people the autonomy to develop in the direction that makes them most effective. We're a tech company and believe in the power of AI to help us work faster and better. We provide the infrastructure where every iwocan always has access to the best models and where those models have access to all of our data. We will help our people to learn how to use and grow with the new tools available to them. The offices We put a lot of effort into making iwoca a great place to work: Offices in London, Leeds, Berlin, and Frankfurt with plenty of drinks and snacks. Events and community-led groups, including running groups, padel, and monthly ping-pong and pool competitions. The benefits Flexible working hours. Medical insurance from Vitality, including discounted gym membership. A private GP service (separate from Vitality) for you, your partner, and your dependents. 25 days' holiday per year, an extra day off for your birthday, the option to buy or sell an additional five days of annual leave, and unlimited unpaid leave. A one-month, fully paid sabbatical after four years. Instant access to external counselling and therapy sessions for team members that need emotional or mental health support. 3% Pension contributions on total earnings. An employee equity incentive scheme. Generous parental leave and a nursery tax benefit scheme to help you save money. Electric car scheme and cycle to work scheme. Two company retreats a year: we've been to France, Italy, Spain, and further afield. And to make sure we all keep learning, we offer: A learning and development budget for everyone. Company-wide talks with internal and external speakers. Access to learning platforms like Treehouse. Useful links: iwoca benefits & policies Interview welcome pack (TAP) Compensation: £90K – £120K • £90K – £120K Find Jobs in United Kingdom on Arbeitnow

OAG is the essential intelligence partner transforming global travel. For nearly a century, we've been the foundation the travel industry builds on, trusted, proven, essential. Today, we're going beyond. We combine unmatched data quality, quantity and access with breakthrough technology and deep industry expertise to deliver what the industry truly needs: not just more data, but better answers. From real-time operational intelligence to strategic decision-making, we power the entire travel ecosystem, from airlines and airports to technology companies and financial institutions. We are actively embedding AI throughout our intelligence layer, combining nearly a century of proprietary data with the latest technology to deliver answers that were simply not possible before. We exist because travel moves the world, and we move travel. By transforming complexity into clarity and questions into answers, we give our partners the intelligence they need to thrive in an evolving world. For more information visit www.oag.com ABOUT THE ROLE: OAG Digital is the team turning our world-class data into a product-led growth engine: a unified experience where customers can discovery, try, pay and use on their own. We build the platform customers use to find, buy and use our data, and the intelligence products that turn that data into answers. This is the most senior individual contributor role on the technical side of Digital. Its purpose is to turn the Digital strategy into a technical strategy that delivers it: deciding what gets built, in what order and to what standard, so the business can sell what it has committed to sell. A decision taken in one team should still work in another, our promises to customers on access, security, reliability and cost should hold on every channel, and the hardest problems should get solved once. You'll work across two areas. Core is the platform backbone: identity, auth, entitlements, billing, usage metering and the infrastructure everything else depends on. Intelligence is the layer above the data: AI-powered insights, predictive models built on Databricks and Snowflake, anomaly detection, and agentic features. The role is hands-on. You'll write production code on the hardest parts of the platform while setting direction, reviewing designs and helping other engineers do better work. We care about UX as much as throughput, and we're AI-native: tooling is part of how we develop, not an afterthought. This role can be worked remotely from anywhere in the UK only. Please note that we're unable to offer visa sponsorship, so applicants will need the existing right to work in the UK. WHAT YOU'LL BE DOING Design and build the hardest parts of the platform, hands on: how customers get to the right data and products, how that access is controlled, and what it costs us to serve. Stay close enough to the code that the design still holds once it's built Set the technical direction for problems that cross team boundaries: how customers are identified, what they're allowed to use, how usage is measured and charged, and how existing customers and older systems move onto the new platform. Write the design down, get agreement, and stay with it through delivery so teams build to one approach rather than several Set the standard for products built on AI and machine learning: define what a feature must do before it ships (show where its answer came from, be honest about how current the data is, fail predictably, be tested repeatably). Set the technical brief for data science teams, including how a model will be judged and the speed and cost it has to work within, and push back when a model isn't the right tool Work with the teams and partners outside Digital who build against your designs, including other parts of OAG and third parties. Share designs early, take feedback, change course where they're right, and make the call when a cross-team decision has been open too long Integrate AI models, data pipelines and event-driven systems on Databricks and Snowflake into the Intelligence layer Improve how the whole of Digital builds software: review designs and code beyond your own team, mentor senior engineers, and make the good way to do something the easy way. This includes making AI-assisted development reliable, with the checks needed to keep quality high Maintain the quality bar through code reviews, automated testing, observability, and CI/CD. WHAT WE'RE LOOKING FOR Extensive experience building and running production software end to end , from system design through to operating it live Technical leadership beyond a single team: a track record of influencing engineers and teams you don't manage, and building agreement across them System design across boundaries : systems that stay correct, fast and affordable when several teams, several delivery channels and a shared data platform are all involved, and sound judgement on when to solve something once centrally versus letting each team solve it Hands-on experience in analytical or data-intensive contexts and depth in large-scale data platforms : how they're built, governed and paid for, including keeping one customer's data separate from another's, controlling access at the data layer, tracking data lineage, and keeping query cost under control Machine learning and AI in production: enough understanding of how models and agents are built, trained and evaluated to set the technical brief for the data science team, read an evaluation critically, and judge whether a result will hold up in the real world. Experience taking AI-powered features into production and making them reliable, cost-effective and trustworthy for customers. Judgement under uncertainty, with commercial awareness: you understand that technical choices affect what the business can charge and what it costs to serve a customer, and you know when to decide and when to wait Clear communicator who can explain direction, risk and trade-offs so that engineers, product, commercial and senior leaders all take away the same thing A builder's mindset . You understand the who and the why, and you own what ships AI-native in how you build: you use AI tooling with judgement, stay current with how agentic development is evolving, and help make effective agentic practices the norm across the team If you don't meet every requirement but feel excited about this role, we'd still love to hear from you. WE WILL OFFER YOU 🚀 A progressive, non-hierarchical culture where innovation drives everything we build 🏡 Flexible working arrangements that allow remote work or office attendance 💰 An attractive compensation and benefits package, including access to a Simplyhealth cash plan to support your everyday health and wellbeing, a company bonus scheme, Octopus EV salary sacrifice scheme and enhanced pension scheme 🏖️ 25 days holiday plus bank holidays, volunteering days and additional day off during your birthday month 👪 Inclusive family benefits designed to support you through parenthood and fertility journeys 🌍 Work remotely anywhere in the world for up to 1 month per year 📚 Annual learning and development budget. OAG is committed to creating an inclusive workplace where everyone feels valued and able to perform at their best. We welcome applications from people of all backgrounds and experiences. If you require reasonable adjustments at any stage of the recruitment process, please let us know. We are happy to have an open conversation about how we can support you. Find more English Speaking Jobs in United Kingdom on Arbeitnow

As a Senior Software Engineer on Coder's Engineering team, you'll build and evolve the systems behind our agentic development experience. You'll work across the agent harness, integrations, and workflows that connect agents with real development environments. You'll stay hands-on, solve complex technical problems, and work closely with Product, Design, and other engineers to ship reliable agentic experiences. What you'll do here Design and build production systems in Go, with work across React and TypeScript where needed. Improve agent execution, tool use, context management, streaming, and long-running workflows. Extend our provider-agnostic architecture as models and capabilities change. Build reliable integrations between agents, workspaces, tools, and developer infrastructure. Own projects from implementation through rollout and iteration. Contribute to design reviews, code reviews, and technical discussions. Partner with Product and Design to turn agent capabilities into useful developer experiences. Improve the reliability, performance, and operability of agentic systems. What we're looking for Strong experience building and operating production software systems. Hands-on experience with Go. Experience with React and TypeScript. Experience building systems around LLMs or agentic workflows. Familiarity with model APIs, tool calling, context management, or agent loops. Good understanding of distributed systems and production reliability. Working knowledge of AWS. Strong problem-solving skills and comfort working through technical ambiguity. Someone who contributes beyond their own code through reviews, collaboration, and knowledge sharing. Bonus tacos if you have Experience building coding agents, developer tools, or cloud development environments. Experience with MCP, agent tools, or multi-agent systems. Experience with remote execution, sandboxing, or isolated compute. Experience building integrations across multiple model providers. Experience with AWS, Kubernetes, Docker, or Linux. Open-source contributions or experience working directly with customers. Our tech stack Backend: Go, Postgres Frontend: TypeScript, React Infrastructure: AWS, Kubernetes Observability: Prometheus, Grafana CI/CD: GitHub Actions Coder's agentic architecture is provider-agnostic. The foundation is built; this role helps extend it, improve it, and ship the next set of agentic capabilities. About Coder Coder is the leading platform for AI development Infrastructure, enabling enterprises to securely run human and AI-driven development workflows in consistent, governed environments. Coder provides self-hosted, agent-ready workspaces that unify developer productivity and platform governance. With Coder, enterprises can confidently evolve from human-only development to AI-assisted and autonomous workflows, without sacrificing security, compliance, or performance. Learn more at coder.com . Interview process We believe that the interview process should be transparent, consistent, and enjoyable. We value your time and hope to complete the interview process in two to four weeks, if schedules allow. Through your interviews, you will meet a mix of individual contributors, managers, and senior leaders. AI use during the interview process As an AI company, Coder embraces the use of AI tools, and we want to be transparent about our expectations as you navigate our interview process. Not permitted : Using AI assistance during conversational interviews. Permitted : Using AI tooling for take-home assessments. Please flag where and to what extent it was used in your take-home. Your submission will not be penalized for using AI as long as it is done honestly. Our use of AI in hiring We use AI tools to help manage our recruitment process efficiently and fairly. Specifically: Ashby helps us review inbound applications by surfacing candidates who best match the role requirements we've defined. This tool does not make hiring decisions; it helps our team prioritize which applications to review first. Granola takes notes during our interview calls so our team can focus on the conversation with you. All hiring decisions are made by humans. Our team reviews applications, conducts interviews, and makes final selections. AI tools assist us but never replace human judgment, and these practices are conducted in compliance with applicable data protection, AI governance, and labor laws. Your data is not used to train AI models. In accordance with New York City Local Law 144, an independent bias audit has been conducted on "Automated Employment Decision Tools"; results are available for Ashby . If you're applying for a role at Coder and have questions about how we use AI in our process, or if you'd like to request information about the data we collect, please contact Coder is a proud Equal Opportunity Employer We are committed to providing equal employment opportunities to qualified applicants and do not discriminate on the basis of race, color, ancestry, religion, sex, pregnancy, gender, gender identity, gender expression, sexual orientation, national origin, age, marital status, genetic information, disability, protected veteran status or any other characteristic protected by federal, state, or local laws. Compensation: £69K – £126K • Offers Equity • Offers Bonus • Multiple Ranges United Kingdom • £69K – £126K • Offers Equity • Offers Bonus Ireland • €111K – €188K • Offers Equity • Offers Bonus Poland • PLN 372K – PLN 661K • Offers Equity • Offers Bonus Find more English Speaking Jobs in United Kingdom on Arbeitnow

Auterion builds a cutting-edge operating system for autonomous robotic systems that empower a diverse range of platforms to perform surveillance, reconnaissance, inspection, mapping and logistics tasks. Our industry-leading software drives the adoption of robotic fleets and is recognized by the U.S. government as the future standard for its drone programs. We are looking for a Senior Embedded Performance Engineer who is passionate about getting the most out of embedded systems — from low-level Linux tuning and hardware integration to high-performance video and data pipelines. This role is ideal for someone who enjoys working close to hardware, moving across the stack, and solving the kinds of problems where milliseconds, bandwidth, startup time, and system efficiency matter. You will work across the AuterionOS ecosystem on topics such as: Embedded Linux performance and system tuning Low-latency video streaming and media pipelines C/C++, Python, and Bash-based platform development Hardware integration, system profiling, and end-to-end optimization Collaboration with experienced and driven engineers across Auterion Responsibilities Work within the Apps & Simulation team and collaborate with other development teams to build high-performance products for autonomous systems. Design, optimize, and maintain performance-critical components within AuterionOS, Auterion's custom embedded Linux distribution. Improve end-to-end system behavior across compute, networking, video, and hardware interfaces, with a strong focus on latency, throughput, reliability, and resource efficiency. Analyze and optimize demanding workloads such as real-time telemetry, video streaming, media processing, and communication between distributed system components. Investigate system bottlenecks across the full stack, from kernel and OS behavior to application-level code and tooling. Collaborate with engineering and product teams to understand both internal and customer use cases, and translate them into robust technical solutions. Propose and implement new platform capabilities with a strong emphasis on measurable performance gains in real-world deployments. Participate in daily stand-ups, release planning, and prioritization discussions. Qualifications and Skills B.Sc. or M.Sc. in Computer Science, Software Engineering, or a related field. 5+ years of professional experience writing object-oriented C++ and/or Python. Deep experience with embedded Linux systems, including cross-compilation, debugging, profiling, and performance tuning. Strong hands-on background in diagnosing and optimizing real-world system behavior, including CPU, memory, I/O, networking, boot time, and application latency. Experience building or optimizing low-latency video or data-streaming pipelines, ideally on embedded platforms. Excellent understanding of software systems that span embedded devices, higher-level applications, and fully integrated products. Strong software engineering fundamentals, including system design, implementation, debugging, and testing. Experience with video codecs, GStreamer, RTP/RTSP, or hardware-accelerated media pipelines. Solid experience with Debian/Ubuntu-based systems, Bash scripting, and systemd. Experience with Docker and docker-compose in complex development and deployment environments, as well as qemu. Strong debugging and performance analysis skills at both system and application level, combined with a proactive and self-directed working style. Proficient in ROS2/DDS-style middleware and experienced with networking across multiple OSI layers, including REST APIs and performance-sensitive communication paths. Experience with system integration and interfacing sensors or peripherals, especially via USB and Ethernet. Experience working in an agile engineering environment with stand-ups, sprint planning, and shared ownership across teams. Bonus: Experience with build systems such as CMake, including improving build performance in large-scale software projects. Benefits Flexible working hours Stock Options Generous holiday allowance Company pension plan Car parking Enhanced maternity & paternity leave Mental health and wellbeing support Learning and development opportunities About Auterion We are building the leading software platform for AI-powered autonomous systems for enterprise and government customers. Our team is supporting the most important missions and solving the most challenging problems. At Auterion, we bring together the sharpest minds who love to solve the hardest problems. Join a vibrant team built on innovation, openness, and excellence, where you'll be empowered to develop ideas, collaborate across all levels, and make an impact that matters. Find more English Speaking Jobs in Switzerland on Arbeitnow

About Mirakl: Founded in 2012, Mirakl has been at the forefront of marketplace innovation, empowering every business to compete in the platform economy. Today, Mirakl's operating system combines an enterprise marketplace solution (Mirakl Platform) that enables retailers and B2B organizations to launch, scale, and operate marketplaces and dropship, AI-powered multichannel selling (Mirakl Connect), retail media (Mirakl Ads) and an agentic commerce infrastructure (Mirakl Nexus). With dual headquarters in Boston and Paris, Mirakl helps a global ecosystem of 450+ marketplaces (B2C and B2B) and a network of over 100k third-party marketplace sellers. Brands like Macy's, Decathlon, Carrefour, Asos, and Airbus Helicopters use Mirakl to grow their businesses in new and remarkable ways. For more information: www.mirakl.com . Mirakl in Numbers: 🗓️ Founded in 2012 | Member of French Tech Next40 👥 750+ employees in 9 offices worldwide: Paris, Barcelona, Bordeaux, Boston, London, Munich, New York, Sydney, Tokyo 🇫🇷 350+ Mirakl Tech teams members mainly based in France ⚙️ 5 Saas Solutions Our Values: Working at Mirakl means accelerating your career alongside ambitious, passionate, and supportive colleagues. We're proud of the diversity of backgrounds, perspectives, and experiences that make our teams unique. Our 5 values guide how we collaborate: 💡 Work Hard Together: Teamwork and collaboration are the foundation of our success 🏆 Get Things Done: We prioritize action and efficiency for impactful results 🚀 Go Above & Beyond: We tackle challenges proactively and always aim for excellence 🎓 Succeed Through Expertise: Knowledge sharing and continuous learning are core to our culture 🤝 Satisfy & Empower Clients: We're committed to our clients' success About the job Design, build, and scale production-grade AI systems that power the next generation of intelligent commerce. You will work at the intersection of Software Engineering, Machine Learning, and Generative AI to build AI-native products, agentic systems, and platform capabilities used by Mirakl customers and internal teams. This is a freelance position based in Paris or Bordeaux, with 1 day of remote work per week. Why Now, Why Mirakl Generative AI and AI Agents are fundamentally reshaping commerce software and the way our teams work on a day to day basis. At Mirakl, AI is becoming a core part of our product strategy. From Catalog Transformer and content generation to AI Agents and Agentic Commerce, we are building the next generation of commerce software. And we have the same ambition for our teams around AI products and adoption. We are looking for a Senior AI Engineer to transform the way our internal teams work, and to have a significant impact on the agentic side of our Saas products. You won't be joining a company that's thinking about AI. You'll be joining one that's already building it. What You'll Do 1. Design & Build AI Systems Design, build, and deploy production-grade AI systems for both Mirakl internal operations. Develop solutions leveraging: LLMs, RAG, AI Agents, Multimodal AI and Evaluation frameworks. Architect complex agentic workflows including tools, memory, retrieval, planning, and guardrails. Rapidly prototype new capabilities and evolve them into scalable, reliable AI production systems. 2. Integrate Across the Stack Connect AI systems to internal platforms, business applications, and data sources across the company. Enable AI agents to interact with systems such as CRM, data platform, Drive, Jira, support tools, and internal knowledge bases. Design robust orchestration layers between models, APIs, tools, retrieval systems, and business workflows. Ensure reliability, observability, scalability, and maintainability across the entire AI stack. 3. Iterate for Impact Partner with end users, business teams, Product Managers, and Engineers to identify high-value opportunities for AI. Run pilots and experiments, gather qualitative and quantitative feedback, and measure business impact. Analyze usage patterns, failure modes, costs, latency, and performance metrics. Continuously improve accuracy, reliability, adoption, and user experience through data-driven iteration. 4. Ensure Quality, Security & Reliability Implement evaluation frameworks, guardrails, validation layers, and monitoring systems. Design AI systems that are secure, explainable, and production-ready. Ensure compliance with data security, governance, and access control requirements. Document architectures, capabilities, limitations, KPIs, and operational best practices. 5. Drive Adoption & Enablement Build a scalable ecosystem of AI systems and agents that empower both internal teams and customers. Support teams in adopting AI-powered workflows and integrating AI into their daily operations. Contribute to AI engineering standards, reusable frameworks, and best practices across the company. Act as a champion for AI-driven ways of working and help shape Mirakl's transition toward Agentic Commerce. Our stack and tools Languages: Python and SQL AI Stack: OpenAI, Anthropic, Gemini, Mistral and Open-source models Agentic & Retrieval: LangGraph, LangChain, LlamaIndex, MCP and Vector Databases Infrastructure: AWS or GCP, Docker and Kubernetes What Makes You Successful Strong engineering mindset: able to design reliable and scalable systems Strong AI expertise: able to translate the latest AI capabilities into production products Strong product mindset: able to balance technical excellence with business impact Focus on measurable outcomes, not technical complexity Success Metrics Product adoption and business impact Performance and reliability of AI systems Quality of AI outputs and evaluation metrics You'll Love This Job If you have 5+ years of experience in Software Engineering, ML Engineering, Applied AI, or related fields Strong Python and software engineering fundamentals Hands-on experience building production AI systems using LLMs, RAG, and AI Agents Experience designing multi-step agentic workflows and retrieval systems Experience evaluating AI systems and improving model performance Experience deploying and operating production services in cloud environments Strong communication skills in English Curiosity, pragmatism, and passion for building AI products Feel free to add a link to your GitHub in your CV so we can understand what you have worked on! Want to join us? Here is our process A 30-40 min phone conversation with one of our Tech recruiters. This will be an opportunity to discuss your background, expectations, and discover what Mirakl can offer you in return. An initial 1h30 technical discussion with a member of the Data Science team and Engineering Team, which will allow you to delve into the more specific aspects of your expertise and discover how your skills can be integrated into our projects. 2 x 45-minute "STAR" interviews with future Mirakl colleagues to discuss our values and company culture. We welcome collaborators with their diverse perspectives and experiences to power us forward. These often far exceed conventional job requirements and help us create a culture of continuous learning. If you're ready to join a global leader powering digital transformation for 450+ of the world's most innovative retailers and B2B organizations. As part of our recruitment process, Mirakl processes your personal data to review and manage your application and, where appropriate, to consider your profile for future opportunities. You can exercise your data protection rights at any time, and as further detailed in our policies. For more information about how we process your personal data and your rights, please consult our Recruitment Privacy Notice, here in English and here in French. We may use Artificial Intelligence (AI) solutions to help streamline our hiring process, including screening applications, analyzing resumes, and assessing responses. While AI helps us work efficiently, all final hiring decisions are made by humans. For more information, visit our AI Guidelines for Candidates and Interviews . Find more English Speaking Jobs in France on Arbeitnow

About Mirakl: Founded in 2012, Mirakl has been at the forefront of marketplace innovation, empowering every business to compete in the platform economy. Today, Mirakl's operating system combines an enterprise marketplace solution (Mirakl Platform) that enables retailers and B2B organizations to launch, scale, and operate marketplaces and dropship, AI-powered multichannel selling (Mirakl Connect), retail media (Mirakl Ads) and an agentic commerce infrastructure (Mirakl Nexus). With dual headquarters in Boston and Paris, Mirakl helps a global ecosystem of 450+ marketplaces (B2C and B2B) and a network of over 100k third-party marketplace sellers. Brands like Macy's, Decathlon, Carrefour, Asos, and Airbus Helicopters use Mirakl to grow their businesses in new and remarkable ways. For more information: www.mirakl.com . Mirakl in Numbers: 🗓️ Founded in 2012 | Member of French Tech Next40 👥 750+ employees in 9 offices worldwide: Paris, Barcelona, Bordeaux, Boston, London, Munich, New York, Sydney, Tokyo 🇫🇷 350+ Mirakl Tech teams members mainly based in France ⚙️ 5 Saas Solutions Our Values: Working at Mirakl means accelerating your career alongside ambitious, passionate, and supportive colleagues. We're proud of the diversity of backgrounds, perspectives, and experiences that make our teams unique. Our 5 values guide how we collaborate: 💡 Work Hard Together: Teamwork and collaboration are the foundation of our success 🏆 Get Things Done: We prioritize action and efficiency for impactful results 🚀 Go Above & Beyond: We tackle challenges proactively and always aim for excellence 🎓 Succeed Through Expertise: Knowledge sharing and continuous learning are core to our culture 🤝 Satisfy & Empower Clients: We're committed to our clients' success About the job Design, build, and scale production-grade AI systems that power the next generation of intelligent commerce. You will work at the intersection of Software Engineering, Machine Learning, and Generative AI to build AI-native products, agentic systems, and platform capabilities used by Mirakl customers and internal teams. This is a freelance position based in Paris or Bordeaux, with 1 day of remote work per week. Why Now, Why Mirakl Generative AI and AI Agents are fundamentally reshaping commerce software and the way our teams work on a day to day basis. At Mirakl, AI is becoming a core part of our product strategy. From Catalog Transformer and content generation to AI Agents and Agentic Commerce, we are building the next generation of commerce software. And we have the same ambition for our teams around AI products and adoption. We are looking for a Senior AI Engineer to transform the way our internal teams work, and to have a significant impact on the agentic side of our Saas products. You won't be joining a company that's thinking about AI. You'll be joining one that's already building it. What You'll Do 1. Design & Build AI Systems Design, build, and deploy production-grade AI systems for both Mirakl internal operations. Develop solutions leveraging: LLMs, RAG, AI Agents, Multimodal AI and Evaluation frameworks. Architect complex agentic workflows including tools, memory, retrieval, planning, and guardrails. Rapidly prototype new capabilities and evolve them into scalable, reliable AI production systems. 2. Integrate Across the Stack Connect AI systems to internal platforms, business applications, and data sources across the company. Enable AI agents to interact with systems such as CRM, data platform, Drive, Jira, support tools, and internal knowledge bases. Design robust orchestration layers between models, APIs, tools, retrieval systems, and business workflows. Ensure reliability, observability, scalability, and maintainability across the entire AI stack. 3. Iterate for Impact Partner with end users, business teams, Product Managers, and Engineers to identify high-value opportunities for AI. Run pilots and experiments, gather qualitative and quantitative feedback, and measure business impact. Analyze usage patterns, failure modes, costs, latency, and performance metrics. Continuously improve accuracy, reliability, adoption, and user experience through data-driven iteration. 4. Ensure Quality, Security & Reliability Implement evaluation frameworks, guardrails, validation layers, and monitoring systems. Design AI systems that are secure, explainable, and production-ready. Ensure compliance with data security, governance, and access control requirements. Document architectures, capabilities, limitations, KPIs, and operational best practices. 5. Drive Adoption & Enablement Build a scalable ecosystem of AI systems and agents that empower both internal teams and customers. Support teams in adopting AI-powered workflows and integrating AI into their daily operations. Contribute to AI engineering standards, reusable frameworks, and best practices across the company. Act as a champion for AI-driven ways of working and help shape Mirakl's transition toward Agentic Commerce. Our stack and tools Languages: Python and SQL AI Stack: OpenAI, Anthropic, Gemini, Mistral and Open-source models Agentic & Retrieval: LangGraph, LangChain, LlamaIndex, MCP and Vector Databases Infrastructure: AWS or GCP, Docker and Kubernetes What Makes You Successful Strong engineering mindset: able to design reliable and scalable systems Strong AI expertise: able to translate the latest AI capabilities into production products Strong product mindset: able to balance technical excellence with business impact Focus on measurable outcomes, not technical complexity Success Metrics Product adoption and business impact Performance and reliability of AI systems Quality of AI outputs and evaluation metrics You'll Love This Job If you have 5+ years of experience in Software Engineering, ML Engineering, Applied AI, or related fields Strong Python and software engineering fundamentals Hands-on experience building production AI systems using LLMs, RAG, and AI Agents Experience designing multi-step agentic workflows and retrieval systems Experience evaluating AI systems and improving model performance Experience deploying and operating production services in cloud environments Strong communication skills in English Curiosity, pragmatism, and passion for building AI products Feel free to add a link to your GitHub in your CV so we can understand what you have worked on! Want to join us? Here is our process A 30-40 min phone conversation with one of our Tech recruiters. This will be an opportunity to discuss your background, expectations, and discover what Mirakl can offer you in return. An initial 1h30 technical discussion with a member of the Data Science team and Engineering Team, which will allow you to delve into the more specific aspects of your expertise and discover how your skills can be integrated into our projects. 2 x 45-minute "STAR" interviews with future Mirakl colleagues to discuss our values and company culture. We welcome collaborators with their diverse perspectives and experiences to power us forward. These often far exceed conventional job requirements and help us create a culture of continuous learning. If you're ready to join a global leader powering digital transformation for 450+ of the world's most innovative retailers and B2B organizations. As part of our recruitment process, Mirakl processes your personal data to review and manage your application and, where appropriate, to consider your profile for future opportunities. You can exercise your data protection rights at any time, and as further detailed in our policies. For more information about how we process your personal data and your rights, please consult our Recruitment Privacy Notice, here in English and here in French. We may use Artificial Intelligence (AI) solutions to help streamline our hiring process, including screening applications, analyzing resumes, and assessing responses. While AI helps us work efficiently, all final hiring decisions are made by humans. For more information, visit our AI Guidelines for Candidates and Interviews . Find Jobs in France on Arbeitnow

Location: Bristol, UK (hybrid, three days a week in the office) Level: Staff Engineer (TL2) Team: Security Engineering, within the Cyber Security squad Salary: £105,600 – £132,000 + discretionary bonus Contract: Permanent Reporting to: Senior Software Engineering Manager Please note: This role requires an existing right to work in the UK . We can't offer visa sponsorship, but we review sponsorship role by role, so keep an eye on our careers site for future opportunities. About Kaluza Kaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination. We help energy companies overcome today's challenges while accelerating the shift to a clean, electrified future. Our platform orchestrates millions of real-time decisions across homes, devices, markets and grids. By combining predictive algorithms with human-centred design, Kaluza makes clean energy dependable, affordable and adaptive to everyday life. With teams across Europe, Asia and Australia, and a joint venture with Mitsubishi Corporation in Japan, we power leading companies including OVO, AGL and ENGIE, as well as innovators like Volvo and Volkswagen. What you'll do You'll join the Security Engineering team, working alongside our cyber security leadership, architecture team and technical leaders across engineering. Our mission is to equip teams to build and innovate while upholding security best practice and protecting client data in the highly regulated energy sector. Integrate security tooling and use AI to prevent, detect and respond to emerging threats Work with senior technical leadership to shape our technical strategy and solutions architecture, so security, risk and compliance feed into technical decisions Help product teams deliver secure systems quickly by building a strong security culture through mentoring, design reviews and training Give product and engineering teams practical guidance on identifying, prioritising and mitigating systemic risks and vulnerabilities Lead the evolution of our security best practice across application development and the wider SDLC, supporting teams with expert advice and automation Influence technical and non-technical stakeholders across Kaluza and client teams Mentor and coach security and software engineers to balance risk with speed and quality Build relationships with third-party security vendors and industry bodies to keep us at the forefront of emerging practices, tooling and standards What you'll bring Ideally, you'll have: Extensive experience mentoring engineers and collaborating closely (e.g. pairing, swarming) Deep understanding of software security flaws and web application security best practice (OWASP Top 10, CWE/SANS Top 25) Extensive knowledge of CI/CD and DevOps principles, and their security considerations Experience applying AI in your own work and helping others build it safely into how they develop Scripting skills and first-hand experience of software development at scale Working knowledge of Okta or equivalent, to enable workforce identity and enforce access management policies Awareness of AWS and/or GCP security best practice, and some experience with infrastructure as code (e.g. Terraform) Experience applying architectural and software design patterns in a complex environment You'll also be: A pragmatic, risk-based decision-maker who weighs the technical and commercial consequences of your choices Skilled at influencing upwards and outwards, with great communication skills Able to set a clear vision for large-scale technical direction and align multiple teams behind it Keen to drive compliance and NFR improvements that balance information security and commercial goals Committed to a culture of learning and improvement, and willing to challenge engineering leadership to support it Skills (SFIA): We use the SFIA framework to assess and develop our security engineers. Levels run from 1 to 7. Essential: Level 6: Systems design Level 5: Information security , specialist advice , systems development lifecycle , solution architecture , emerging technology monitoring Level 4: Information assurance , information and data compliance Desirable: Identity and access management (Level 5), software development (Level 6), learning delivery (Level 3), and information assurance stepping up to Level 5 Our values Five values guide how we work at Kaluza: Play to win: Collective pride in decarbonising energy at scale. Solve the real problem: Cutting through complexity to focus on real-world outcomes. Build trust every day: Consistency, transparency and doing what we say. Own the outcome: Full accountability, wins and setbacks, without ego. Go further together: Collaboration, respect and different perspectives. Our perks Time off and family: 26 days' holiday [plus/including bank holidays], plus 26 weeks' full pay for new parents with no qualifying service period Health and security: Private medical insurance with virtual GP, life assurance, pension scheme, free mortgage advice and eye tests Pay and flexibility: Discretionary bonus, a Flex Fund of 5% [of salary] to spend on the benefits you want most, retail discounts through Perks at Work Growth and setup: Personal learning budget, home office budget Climate: Furthr, our climate action app Come as you are We want to meet people from all walks of life. The more inclusive we are, the better our work will be, and we recognise talent on merit and potential. If you're excited about the role but don't tick every box, we'd still love to hear from you. If you need any adjustments during the process, just let us know. Find out more on our careers page and LinkedIn , or read our Applicant Data Protection Policy . Find more English Speaking Jobs in United Kingdom on Arbeitnow

About the role Radiant exists to redefine how AI infrastructure is built and operated at scale. We are creating a vertically integrated AI platform that brings together physical infrastructure, control planes, and cloud-native software to deliver abundance, control, and sovereignty in a world constrained by traditional hyperscaler models. Our vision is to enable organisations to build, train, and deploy AI at national and global scale without surrendering control over performance, cost, or locality. This requires engineering systems that operate across software, hardware, and physical environments, and that remain reliable as scale and complexity increase. We are scaling our engineering organisation now. Most of our engineering manager seats are open. You join, shape how the teams work, and grow with them. As an Engineering Manager, you lead a team building and operating core parts of Radiant's cloud platform. You combine people leadership, technical judgement, delivery ownership and cross-functional collaboration. You work closely with product, infrastructure, SRE, security and other engineering teams. This is a hands-on leadership role. It focuses on building strong teams, delivering reliable platform capabilities, and creating an environment where engineers do their best work. The streams We run engineering as ten streams in three groups. Each stream is a full team of about nine people: principal, senior and mid-level software engineers, an SDET, a DevOps engineer and a platform engineer. Each stream has its own engineering manager. Infrastructure: Compute, Network, Storage, Cluster Platform: Cloud, Infra, Observability, Security AI: Training, Inference You do not apply for a single stream. We hire strong managers first. Then we agree your stream with you, based on your strengths and interests. Your first stream is a starting point, not a fixed track. Moves between streams are normal here. Key responsibilities You lead one stream end to end: people, delivery and production. Lead, coach and develop a team of about nine engineers across platform, infrastructure and distributed systems. Own team execution across planning, prioritisation, delivery, quality and operational readiness. Partner with product to turn priorities into clear technical plans and achievable milestones. Provide technical leadership on architecture, reliability, scalability and engineering trade-offs. Set strong engineering practices for design, testing, observability, documentation and incident learning. Improve team effectiveness through clear ownership, healthy processes and strong cross-team collaboration. Hire, onboard and retain high-performing engineers. Hiring is a large part of the first year. Expect around two hours a day on it. Support career development through regular feedback, coaching and progression planning. Manage technical risk, dependencies and delivery challenges across complex platform initiatives. Bring AI-assisted engineering into daily work, within our guardrails. Build a culture of ownership, pragmatism, operational excellence and continuous improvement. Attitude comes first Curiosity: you learn new domains fast. GPUs, networks and storage excite you rather than worry you. Candour: you say what you think, with care. You welcome challenge to your own ideas. Builder mindset: much here is not built yet. You enjoy creating the process, not just running it. Pace with standards: you move fast and keep quality high. Generosity: you make the people around you better. You give credit and share what you know. Your profile Experience leading engineering teams building cloud platforms, infrastructure, developer tooling or distributed systems. A strong technical background. You engage credibly in architecture and design discussions. A good understanding of: Cloud infrastructure: compute, storage, networking, Kubernetes, containers Platform engineering: APIs, automation, IAM, observability, reliability Distributed systems: scaling, consistency, failure handling Engineering operations: incident response, capacity, performance, production ownership Proven experience in people management, hiring, coaching and performance development. Strong delivery and prioritisation skills across competing priorities. Comfort working closely with product and other engineering leaders in an ambiguous, fast-moving environment. The ability to balance technical quality, delivery speed, reliability and team sustainability. Experience with GPU, HPC or AI infrastructure is a bonus. Nobody has depth in every area above. Tell us which you know and which you want to learn. What you bring People leadership: you build strong teams and help engineers grow. Technical judgement: you challenge designs and guide trade-offs without owning every implementation detail. Execution: you create clarity and drive complex work to completion. Systems thinking: you understand how platform components and teams fit together. Operational mindset: you care about reliability, maintainability and production quality. Ownership: you take responsibility for both team health and engineering outcomes. Find more English Speaking Jobs in United Kingdom on Arbeitnow

Job title: Machine Learning Engineer – Lumen Enterprise Models (SWE-focused LLMs) Location: London; full in-office working as default Start date: ASAP Reports to: CEO Compensation: Salary and Equity options available for discussion Application deadline: 08/11/26 at 23:59 UK time ___________________________________________________________________________ Help train the software engineers of the future Cosine is building autonomous software-engineering systems for organisations where reliability, security and control matter most. Our Lumen Enterprise models are designed to work across real codebases. They need to understand unfamiliar architectures, make changes across multiple files, use tools, run tests and produce software that engineers can maintain and trust. We're looking for a Machine Learning Engineer to help train and improve these models. You'll work across the full training stack, including pre-training, supervised fine-tuning and reinforcement learning. This is a truly unique role that will provide exposure across all areas of the model training lifecycle. WE're looking for someone who is just as happy to profile the training loop, identifying performance bottlenecks and memory leaks, as implementing new RL algorithms. This is a hands-on role for someone who enjoys working close to the model and cares about the quality of the software it produces. ___________________________________________________________________________ The role You'll work closely with research, infrastructure and product to answer questions such as: What should Lumen learn next? Which data and environments will teach it most effectively? How should we reward correct, maintainable and useful software? How do we train models to work across large repositories and long contexts? How do we know when a model is genuinely better for engineers? The models you train will write code, use development tools, run tests and receive feedback from real software-engineering environments. Your work will directly influence how Lumen reasons about code, navigates unfamiliar systems and improves through experience. ___________________________________________________________________________ Why this role matters The best coding models are not simply the ones that generate plausible code. They need to understand context, respect existing architecture, use tools effectively, test their work and recover when their first attempt fails. They need to produce changes that work in the real world, not just on a benchmark. That behaviour has to be trained. You'll work directly on the data, environments, rewards and evaluations that shape Lumen's capabilities. Your work will influence the models used by engineers and enterprise teams working on complex and security-sensitive software systems. This is an opportunity to work on frontier model training while staying close to a concrete, high-value outcome: building AI that can genuinely do software engineering. ___________________________________________________________________________ What you'll do Work across the full training lifecycle, running pre-training, supervised fine-tuning and reinforcement-learning experiments. Optimize training methods at scale on frontier models. Diagnose and fix performance bottlenecks and communication overhead in distributed training environments. Train models on long-context, multi-file and repository-level tasks. Develop RL and RLVR loops using signals from execution, tests, linters, static analysis and other engineering feedback, turning fresh ideas into scalable, reproducible code. Investigate model failure modes such as poor planning, brittle fixes, reward hacking and regressions. Collaborate with infrastructure, platform and data teams. ___________________________________________________________________________ What we're looking for You may come from machine learning research, applied ML, model training or a closely related engineering background. You should have: Strong experience training deep-learning models in a production or research environment. Deep practical experience with PyTorch or a comparable framework. Experience with distributed training and multi-GPU systems (FSDP, Deepspeed, …) Strong software-engineering fundamentals and a high bar for correctness and maintainability. Clear communication and the ability to explain technical trade-offs. Experience with large language models is important. You should have worked meaningfully on at least one of, pre-training, SFT, preference optimisation, RLHF or RLVR. We care more about depth of understanding and evidence of strong technical judgement than about having used every tool listed. Even if you don't tick every box, please consider applying! A bonus if you have Experience with mixture-of-experts (MoE) architectures. Experience with CUDA. Familiarity with vLLM, SGLang or other high-performance inference systems. Experience running jobs on SLURM, Kubernetes or managed GPU platforms. Experience with code-model benchmarks such as SWE-bench, HumanEval or internal repository-level evaluations. Contributions to open-source model-training, RL or evaluation tools. ___________________________________________________________________________ Why join Cosine Direct impact: Your work directly shapes the next generations of Lumen Enterprise SWE models that engineers use every day. Real scale: You'll work with large, modern open-source models, long context lengths, and multi-node training runs. Full-stack ML engineering: From custom PyTorch code and distributed systems to data curation, RL design and MLOps. Research + pragmatism: You'll stay close to the latest literature in SFT, and code LLMs, but you'll be judged by shipped improvements, not just ideas. If this sounds like a fit, this is a role where you can meaningfully push the frontier of open-source–based software engineering models. ___________________________________________________________________________ Cosine is an equal opportunity employer. We value diverse backgrounds, perspectives, and ways of thinking, and we're committed to creating an inclusive and respectful workplace. We encourage applications from anyone who meets the role requirements, even if you don't meet every single qualification. If you need reasonable adjustments at any stage of the hiring process, we're happy to discuss them. ___________________________________________________________________________ Compensation, Benefits & Ways of Working We're an in-office team, five days a week, by design. We believe the work we're doing benefits from being together, collaborating closely, and building shared context. What you can expect: Competitive salary , benchmarked to the market Equity / share options , so you share in the upside you help create 30 days' holiday + bank holidays Work hard in the office, collaborate closely, and switch off properly Dog-friendly office — bring your dog to work Weekly team breakfast & lunch Monthly socials Pension High-quality equipment to do your best work We care about focus, sustainability, and doing great work — not performative overwork. We value people who show up, contribute thoughtfully, collaborate well with their colleagues, and then go home. This role won't suit everyone. But if you're looking for a fast-moving environment, close collaboration, and a team that takes both the work and work-life balance seriously, it's a great place to be. ___________________________________________________________________________ Agency & Data Protection Notice To comply with UK GDPR and our internal data-protection and equal-opportunity obligations, we only accept candidate applications and agency submissions via our Applicant Tracking System (ATS). This ensures appropriate privacy notices, lawful processing, auditability, and consistent retention controls. Any CVs or candidate details received outside the ATS (including via email, Slack, or direct message) will be treated as unsolicited, will not be considered as part of the recruitment process, and will not give rise to any fee or payment obligation. Find Jobs in United Kingdom on Arbeitnow

Job title: Applied ML Technical Lead, Defence Location: London; full in-office working as default Start date: ASAP Reports to: CEO Compensation: Salary and Equity options available for discussion Clearance: Must be eligible to hold UK Security Vetting Clearance SC or above (no prior clearance required) Application Deadline: 08/11/26 at 23:59 UK Time ___________________________________________________________________________ Help put frontier AI to work in Defence Cosine is a UK AI lab building models, applications and training infrastructure for mission-critical organisations. We build coding agents that work across real software systems, specialised Lumen models, AI-native security products and the infrastructure needed to deploy advanced AI in demanding environments. Our customers include some of the world's largest enterprises, including organisations operating behind strict security, regulatory and technical constraints. We're also training Lumen Sovereign, the first frontier large language model trained in the UK, with the support of the UK Government. We're now looking for an Applied ML Technical Lead to help develop and deploy advanced AI capabilities for organisations operating in UK Defence and national security. This is a hands-on technical leadership role. You will work across machine learning development, deployment and customer-facing technical delivery. You may spend part of your time training and evaluating models on complex sensor data, and part of your time working with Defence stakeholders to understand operational needs, shape priorities and guide delivery. You will not be expected to act as a traditional project manager. Instead, you will own the technical direction and day-to-day progress of applied ML work, coordinating the people and decisions needed to turn promising research into useful operational capability. ___________________________________________________________________________ What you'll do Build ML capabilities for real Defence problems Design, build, train and evaluate machine learning models for challenging applied Defence and national security use cases. Work on problems involving complex sensor data, signal processing, pattern recognition, classification and multimodal intelligence. Develop and improve model architectures, training pipelines, evaluation frameworks and inference systems. Work with real-world and synthetic datasets to improve model accuracy, robustness and generalisation. Translate research prototypes into reliable, deployable capabilities that operate within demanding technical and security constraints. Work closely with Cosine's ML research and engineering teams while taking direct ownership of technical outcomes. Lead technical delivery from prototype to deployment Own the technical direction and day-to-day progress of applied ML projects. Turn operational objectives into concrete technical goals, experiments, milestones and success measures. Coordinate work across ML researchers, software engineers, infrastructure teams and external stakeholders. Identify technical dependencies, delivery risks and blockers, and help drive them to resolution. Establish clear evaluation criteria and demonstrate progress through measurable improvements and working capabilities. Balance hands-on engineering with the planning and coordination needed to keep complex technical work moving. Work directly with Defence customers Engage with technical and operational stakeholders across the UK Defence and national security ecosystem. Understand operational challenges and identify where machine learning can make a meaningful difference. Translate customer requirements and constraints into technical objectives, datasets, experiments and delivery plans. Present technical progress, demonstrate working capabilities and communicate results clearly to technical and non-technical audiences. Build trusted relationships with Defence stakeholders and act as a credible technical counterpart. Help customers understand the practical considerations of integrating and deploying ML systems in their existing environments. Turn research into operational capability Help deploy ML models into real-world environments, including secure, on-premise and resource-constrained systems. Work on model optimisation, inference performance, integration and reliability. Develop robust approaches to evaluation, validation and continuous model improvement. Understand data availability, access requirements, security restrictions and deployment constraints. Establish feedback loops between operational users and Cosine's engineering teams. Ensure that what we build is not only technically impressive, but genuinely useful to the people relying on it. ___________________________________________________________________________ What we're looking for You'll probably have a background in applied machine learning, ML engineering, research engineering or a similarly technical role, along with experience taking ownership of complex technical work. You should be comfortable: Writing production-quality Python and working with modern ML frameworks such as PyTorch. Building, training, fine-tuning and evaluating machine learning models. Working with complex datasets, designing experiments and interpreting model performance. Understanding the trade-offs between model performance, compute requirements, latency and deployment constraints. Working with engineering infrastructure, including Git, containers, Linux and GPU compute. Taking technical ownership of projects with multiple stakeholders, uncertain requirements and evolving priorities. Communicating technical concepts clearly to researchers, engineers, senior stakeholders and operational users. Moving between model development, customer discussions and delivery planning without losing technical depth. Making sound technical judgements, prioritising effectively and finding practical solutions when the path forward is unclear. You don't need to have worked in Defence before. You do need to be excited by the opportunity to apply advanced ML to difficult, consequential real-world problems. Nice to have Existing UK security clearance, such as SC or DV, or previous experience working in secure Defence environments. Experience with signal processing, time-series data, sensor fusion, representation learning or machine learning applied to complex real-world datasets. Experience with foundation models, multimodal learning or advanced model training and post-training techniques. Experience deploying ML models to edge devices or constrained compute environments. Familiarity with UK Defence procurement, technical assurance or the national security landscape. Experience leading technical workstreams or working as a technical lead on customer-facing ML projects. ___________________________________________________________________________ What success looks like In your first three months, we would expect you to: Become the technical lead for a major applied Defence ML programme, with responsibility for its day-to-day technical progress. Build strong working relationships with Cosine's ML researchers, engineers and key Defence customer stakeholders. Develop a clear understanding of the existing models, datasets, technical architecture and operational objectives. Establish a focused delivery plan with clear priorities, milestones, ownership and success measures. Make meaningful hands-on contributions to model development, evaluation or deployment. Identify and begin addressing the most important technical and operational blockers. Demonstrate tangible progress to customer stakeholders and build confidence in Cosine's ability to deliver. Longer term, you'll help take advanced ML capabilities from promising prototypes into operational use, while shaping how Cosine builds and delivers applied AI for Defence and other mission-critical organisations. ___________________________________________________________________________ Why this role matters Some of the most important applications of AI won't be found in consumer products. They'll be in environments where information is incomplete, systems are complex, security matters and the consequences of getting things wrong are significant. Cosine is working to bring frontier machine learning into those environments. Doing that requires more than good models. It requires people who can understand an operational problem, build something that works, make good technical decisions, coordinate the work needed to deliver it and stay close to the customer until it creates real value. You'll have unusual proximity to cutting-edge ML research, senior Defence stakeholders and the operational challenges that will shape the next generation of AI capabilities. This role will suit someone who is technically strong enough to build, organised enough to lead technical delivery and curious enough to engage directly with the people using the technology. If you enjoy being close to the research, close to customers and personally accountable for turning ambitious technology into something real, come and work with us. Come help make frontier AI useful where it matters most. ___________________________________________________________________________ Cosine is an equal opportunity employer. We value diverse backgrounds, perspectives, and ways of thinking, and we're committed to creating an inclusive and respectful workplace. We encourage applications from anyone who meets the role requirements, even if you don't meet every single qualification. If you need reasonable adjustments at any stage of the hiring process, we're happy to discuss them. ___________________________________________________________________________ Compensation, Benefits & Ways of Working We're an in-office team, five days a week, by design. We believe the work we're doing benefits from being together, collaborating closely, and building shared context. What you can expect: Competitive salary , benchmarked to the market Equity / share options , so you share in the upside you help create 30 days' holiday + bank holidays Work hard in the office, collaborate closely, and switch off properly Dog-friendly office — bring your dog to work Weekly team breakfast & lunch Monthly socials Pension High-quality equipment to do your best work We care about focus, sustainability, and doing great work — not performative overwork. We value people who show up, contribute thoughtfully, collaborate well with their colleagues, and then go home. This role won't suit everyone. But if you're looking for a fast-moving environment, close collaboration, and a team that takes both the work and work-life balance seriously, it's a great place to be. ___________________________________________________________________________ Agency & Data Protection Notice To comply with UK GDPR and our internal data-protection and equal-opportunity obligations, we only accept candidate applications and agency submissions via our Applicant Tracking System (ATS). This ensures appropriate privacy notices, lawful processing, audibility, and consistent retention controls. Any CVs or candidate details received outside the ATS (including via email, Slack, or direct message) will be treated as unsolicited, will not be considered as part of the recruitment process, and will not give rise to any fee or payment obligation. Find Jobs in United Kingdom on Arbeitnow