Find Your Dream Career

The role You will help the Firefox DOM Core team improve the health of the Session History area. You will write tests to improve the coverage; you will fix tests and/or problems to improve the Gecko correctness. Responsibilities Write Web-Platform tests to improve the coverage, and Gecko mochitests as needed Fix the problems and pass the tests to improve the Gecko correctness Work through code review with the relevant Gecko module owners and iterate to landing Definition of done Improved Session History test coverage and code correctness in Gecko, measured by passed test cases, allowing the team's senior engineers to focus on security, performance and strategic projects. Required qualifications Substantial experience in a browser-engine codebase or in automating for a browser-engine, ideally Firefox/Gecko. Solid Javascript and applying that language skill to write automated tests. Proficiency in and experience developing software in C++. Strong debugging skills in a mature larget codebase. Comfort working in the open: public bugs, code review, and upstream landing. Preferred Prior contributions to Gecko or another major browser engine. Familiarity with web standards and Web Platform Tests. Find Jobs in United Kingdom on Arbeitnow

About Wolt At Wolt, we create technology that brings joy, simplicity and earnings to the neighborhoods of the world. In 2014 we started with delivery of restaurant food. Now we're building the delivery of (almost) everything and you'll find us in over 500 cities in 30 countries around the world. In 2022 we joined forces with DoorDash and together we keep on dreaming big and expanding across the globe. Working at Wolt isn't always easy, but it's definitely exciting. Here you'll learn more, build more, and ship more than in most other companies. You'll be challenged a lot, but also have a lot of fun on the way. So, if you're a self-starter with drive and entrepreneurial spirit, this could be the ride of your life. Wolt is looking for a Senior Software Engineer (Front-end-leaning) to join our Operations Foundations team. The team sits within the DoorDash Client and AI Development group and is responsible for the foundation that hundreds of engineers across Wolt, DoorDash, and Deliveroo rely on to build internal operations tools. Our platform hosts 250+ micro-frontends (MFEs) used to operate every part of the business. Our team is focused on building a scalable, reliable, and high-quality internal tooling platform that supports Wolt, DoorDash, and Deliveroo's operations and business. The team plays an important role in improving how engineers build, test, and ship software across the organization, with a strong emphasis on reusable libraries, micro-frontend architecture, and agentic development: building the platform where AI agents can take changes from task to merged PR safely and reliably without lowering the quality bar. Currently, we are focused on unifying our frontend platforms, evolving shared components and library development, improving developer productivity, and enabling teams to deliver more independently through better architecture and tooling. It's an exciting time to join because the team has strong ownership and a broad technical impact. We're looking for a Senior Software Engineer who can take ownership of complex technical initiatives across both frontend and sometimes backend and infra domains. In this role, you'll work primarily with TypeScript, React, Node.js, CI/CD pipelines (GitHub Actions, Buildkite), and MFE architecture to build scalable, maintainable solutions that support multiple product teams and business areas. Success in this role means becoming a trusted technical owner who consistently delivers reliable solutions and helps the team execute more effectively. Six months into the role, we'd expect you to be independently leading technical initiatives and contributing meaningfully to architecture and delivery planning. This role offers the opportunity to solve challenging engineering problems with visible impact across the business. It's especially exciting for someone who enjoys combining product engineering with platform thinking, improving developer workflows, and building systems that scale across teams and domains. What you'll be doing Owning the Foundation: the runtime, build, deployment, and developer experience that 250+ MFEs and hundreds of engineers depend on every day. Evolving Our Micro-Frontend Architecture : improve composition, isolation, and shared dependency strategies so feature teams can move fast. Product and Planning: Independently drive projects from idea to production: breaking down ambiguous problems into clear technical plans, estimating delivery, identifying risks early, and delivering high-quality solutions in a timely manner. Supporting Engineering Excellence : Champion best practices, raise the bar for code quality, and turn lessons learned into platform improvements. Long-Term Thinking: Balance short-term feature unblockers with the long-term health, security, and maintainability of the platform. Agentic Development: Build the foundations that let AI agents work autonomously on our platform, including agent instructions, reusable skills, tool integrations, guardrails, and the automated checks that make agent-authored changes safe to ship. AI Fluency: Work agent-first in your own day-to-day: delegate implementation to agents, and focus your judgment on direction, architecture, and verifying outcomes. 📍This role can be based in our Berlin tech hub. Read more about our hybrid setup here . Feel free to check out the Wolt Tech Blog for more insight into our culture and technology. Our humble expectations Proven expertise in building production frontend applications using TypeScript and React. Solid backend knowledge, comfortable owning and operating Node.js services that support frontend infrastructure. Strong knowledge of frontend build tools, bundlers, and module systems, and the ability to evolve them as the platform grows. Track record of diagnosing and resolving complex performance, reliability, or DX issues in large frontend codebases. Experience driving technical initiatives across multiple engineering teams and stakeholders. Strong stakeholder management skills: aligning priorities, managing expectations, and communicating trade-offs clearly with partner teams and leadership. Strong communication skills and a collaborative, platform-mindset approach to working with feature teams. Strong documentation skills, including experience writing RFCs or ADRs. Nice to Haves Experience with micro-frontend architecture. Frontend platform engineering experience. Experience building shared component libraries used by many product teams. Hands-on experience with CI/CD pipelines, deployment processes, and cloud infrastructure for frontend workloads. Experience or interest in observability and reliability (SRE). Experience building tooling or workflows for autonomous AI coding agents (e.g., agent instructions, skills, MCP servers, or evaluating agent-generated code). What's in it for you Impact: Build and shape the platform that thousands of people depend on. Scale: Work on real platform problems behind 250+ MFEs with hundreds of monthly contributors. Collaboration: Partner with talented engineers, designers, and operators across companies to make their daily work faster and better. Growth: Take on deep technical challenges across frontend architecture, agentic development, DX, and improving engineering efficiency. Culture: Be part of a diverse, open-minded team that values creativity, autonomy, and continuous learning. Our Commitment to Diversity and Inclusion We're committed to growing and empowering a more inclusive community within our company, industry, and cities. That's why we hire and cultivate diverse teams of people from all backgrounds, experiences, and perspectives. We believe that true innovation happens when everyone has room at the table and the tools, resources, and opportunity to excel. Beware of recruitment scams: DoorDash, Deliveroo, and Wolt will never ask you to pay money or share sensitive financial information during hiring — learn more about our legitimate recruiting process at Recruitment Scam Awareness - DoorDash . Find Jobs in Germany on Arbeitnow

Welcome to Planet. We believe in using space to help life on Earth. Planet designs, builds, and operates the largest constellation of imaging satellites in history. This constellation delivers an unprecedented dataset of empirical information via a revolutionary cloud-based platform to authoritative figures in commercial, environmental, and humanitarian sectors. We are both a space company and data company all rolled into one. Customers and users across the globe use Planet's data to develop new technologies, drive revenue, power research, and solve our world's toughest obstacles. As we control every component of hardware design, manufacturing, data processing, and software engineering, our office is a truly inspiring mix of experts from a variety of domains. We have a people-centric approach toward culture and community and we strive to iterate in a way that puts our team members first and prepares our company for growth. Join Planet and be a part of our mission to change the way people see the world. Planet is a global company with employees working remotely world wide and joining us from offices in San Francisco, Washington DC, Germany, Austria, Slovenia, and The Netherlands. About the Role: As a Pre-Sales Solutions Architect, you'll design complex solutions to demonstrate the value of Planet's data and services to help organizations within the German Defense and Intelligence community overcome their earth data challenges. You'll collaborate with internal cross-functional teams, including Customer Success, Product Management, and Business Development, to act as the voice of the customer and enhance Planet's industry offerings. Ideal candidates are dedicated to earth observation and enabling customer success across complex technical projects. This is a full-time, remote position based in Germany. If located near an office, you are expected to work from that office 3 days per week. Impact You'll Own: Build and deliver presentations and product demonstrations highlighting technical capabilities of Planet's platform and our ability to fulfill customer's business needs. Build relationships with customers' technical and management staff as a trusted advisor to their business. Act as a technical advisor to the customer to recommend a solutions architecture that fits their business challenges. Craft the technical response to tenders, RFI's/RFP's, and unsolicited proposals with respect to Planet's products and solutions. Partner with your sales team colleagues to architect and drive the technical strategy across customer and prospect account plans. Collaborate with internal cross-functional teams including Customer Success, Product Management, and Business Development to act as the voice of the customer, assist with RFP and RFI preparation and submissions. Attain quarterly and annual sales and operational objectives assigned by management. Represent the needs of Planet's Defense and Intelligence customers to Sales leadership by communicating forecasts, pipeline opportunities, deal reviews, CRM data, and customer feedback. Present to key executive Government stakeholders within the German Government Mentors junior team members and contributes to team training materials. What You Bring: 6+ years of experience supporting the German Defense and Intelligence community in a technical capacity. Bachelor's degree in a relevant field. Ability to travel, including internationally, up to 25%. Excellent verbal and written communication skills in the German language. Professional working proficiency in English, the language of the company. Experience working with GIS and Remote Sensing users within the Defense industry. Experience in IMINT, ISR, and related fields. Experience with QGIS, SocetGXP, ArcGIS, GDAL, Python, and other geospatial software packages and programming languages. Experience designing and presenting complex systems and solutions that bridge the gap between business problems and technology to meet organizational goals, budget, and scalability needs. Ability to communicate and coordinate effectively with both technical and non-technical stakeholders. Ability to process imagery, manipulate geospatial data, interact with APIs, and build data pipelines. Obtaining and maintaining eligibility for a German security clearance (Sicherheitsüberprüfung) is required. What Makes You Stand Out: Ability to multitask, prioritize, and manage time effectively in a dynamic environment. Experience leading technical customer engagements and leading workshops or training sessions with users. Application Deadline: 11:45p / 23:45 CET on the date stated below. Applications are reviewed on a rolling basis. This posting may be removed earlier than projected if a suitable pool of applications has been received. For this reason, we recommend applying as soon as you are able to. Export Control Requirements: Planet Labs Germany GmbH is authorized to receive U.S. export-controlled information at Planet under an export license issued by the Bureau of Industry and Security. This position requires access to U.S. and German/EU export-controlled information, and as such, employment (or hiring of a contractor) is contingent upon the candidate's ability to access all applicable export-controlled information without additional export licensing being required by German, EU, or U.S. authorities. Benefits While Working at Planet: These offerings are dependent on employment type and geographical location, based upon applicable law or company policy. Paid time off including vacation, holidays and company-wide days off Employee Wellness Program Home Office Reimbursement Monthly Phone and Internet Reimbursement Tuition Reimbursement and access to LinkedIn Learning Equity Volunteering Paid Time Off Compensation: The expected starting gross salary range for this role is listed below. Individual placement within this range is determined objectively based on gender-neutral criteria such as your skills, qualifications, and professional experience. This position may also be eligible for discretionary bonuses and/or equity. In addition to the salary range listed below, this role is also eligible to receive commission. #LI-REMOTE Germany Salary Range €63.910 — €79.870 EUR San Francisco Fair Chance Ordinance Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records. Why we care so much about Belonging. We're dedicated to helping the whole Planet, and to do that we must strive to represent all of it within each of our offices and on all of our teams. That's why Planet is guided by an ultimate north star of Belonging—dreaming big as we approach our ongoing work. If this job intrigues you, but you're thinking you might not have all the qualifications, please... do apply! At Planet, we are looking for well-rounded people from around the world who can contribute to more ways than just what is listed in this job description. We don't just fill positions, we aspire to fulfill people's careers, most excited about folks who are motivated by our underlying humanitarian efforts. We are a few orbits around the sun before we get to where we want to be, so we hope you're excited to come along for the ride. EEO statement: Planet is committed to building a community where everyone belongs and we invite people from all backgrounds to apply. Planet is an equal opportunity employer, and committed to providing employment opportunities regardless of race, religious creed, color, national origin, ancestry, physical disability, mental disability, medical condition, genetic information, marital status, sex, gender, gender identity, gender expression, pregnancy, childbirth and breastfeeding, age, sexual orientation, military or veteran status, or any other protected classification, in accordance with applicable federal, state, and local laws. Know Your Rights. Accommodations: Planet is an inclusive community and we know that everyone has their own needs. If you have a disability or special need that requires accommodation during the hiring process, please reach out to ----- or contact your recruiter with your request. Your message will be confidential and we will be happy to assist you. Privacy Policy : By clicking "Apply Now" at the top of this job posting, I acknowledge that I have read the Planet Data Privacy Notice for California Staff Members and Applicants , and hereby consent to the collection, processing, use, and storage of my personal information as described therein. Privacy Policy (European Applicants): By clicking "Apply Now" at the top of this job posting, I acknowledge that I have read the Candidate Privacy Notice GDPR Planet Labs Europe , and hereby consent to the collection, processing, use, and storage of my personal information as described therein. AI in Our Interviewing Process : Planet is committed to providing an exceptional interview experience for all candidates. We currently use Metaview to better focus on candidates and less on trying to capture notes. As such, with the candidate's consent, select interviews may be recorded and include a "Planet AI Notetaker" for transcription and summarization purposes. Should an interview involve use of AI interview technologies, the candidate will receive notification and have the ability to opt out both in advance and/or real-time. Opting out will not affect one's candidacy. Candidate AI Policy : Planet embraces Artificial Intelligence (AI) tools, and we encourage its responsible use. We understand that candidates may use various resources, including AI tools, to prepare for interviews and assessments. However, during any live interview stage or when actively completing assessments for this position, the use of AI tools—e.g. Large Language Models (LLMs), deep fake technology, etc.—is strictly prohibited unless explicitly prompted by an interviewer or assessment instructions . If you are unsure about acceptable use, please contact your recruiter for clarification. If an AI tool or similar technology is desired as an accommodation, please contact ----- with your request for assistance. Your message will be confidential, and we will be happy to assist you. Violation of this policy may result in disqualification of your application. Find Jobs in Germany on Arbeitnow

About the role At Agile Robots, we build powerful software frameworks to orchestrate complex robotic systems and solve challenging tasks. The solutions are sold to various international customers to enable them to control their robotic work cells. Smooth integration and scalable deployment are key goals. AgileCore is meant to be a scalable platform that supports multiple projects in parallel. That only works if the platform underneath scales with it - if it stays fast, thread-safe, and diagnosable as projects, devices, and operating conditions multiply. We are looking for a Senior C++ Performance Engineer to join our AgileCore Runtime core team. This is a T-shaped role in a small senior team: you are a full member of the core team first - contributing to the Runtime, reviewing contributions from the teams that build on our platform, and sharing our support and release duties - and within the team, you own the performance and stability practice as your specialization. On the specialization side, you will drive the performance of the Runtime core - the Blackboard, the Behavior Engine and the execution paths beneath them - make the system provably thread-safe under load, and make failures in the field fast to diagnose. You own the practice: the methodology, the tooling, the benchmarks, the audits and the education. You work hand in hand with the platform architect, who owns the performance budgets and hot-path interface contracts at the architecture level - you turn those budgets into measured, enforced reality and shape them with your findings. You set the standard for performance, concurrency and troubleshooting, and raise the team's ability to meet it without slowing feature development down. This is a shipping role, not a research role: success is measured in merged improvements, closed field escalations and green regression gates - not in microbenchmark leaderboards. We optimize to the budget the product needs, not to zero. Why this role Greenfield performance infrastructure: the benchmark suites, budgets and CI regression gates are yours to build, not inherit A measurable, physical problem: your profiling and your benchmarks run against real robots on our hardware-in-the-loop rigs - where third-party plugins meet 1 kHz vendor control loops A small senior core team with real ownership: your work becomes the standard the whole platform builds on Your Responsibilities: Own the latency, throughput, and jitter of the Runtime core components - the Blackboard (our typed, subscribable in-process data plane) and the Behavior Engine (skill execution tree, trigger handling) - and carry improvements end to end: from flame graph to merged change to a regression gate that keeps it fixed Build the real-time basis for the platform: scheduling policies and priorities, CPU affinity, allocation, and page-fault discipline on hot paths, and lock-free structures where they pay for themselves Be a full member of the Runtime core team: develop core components, review contributions from feature teams building on the platform, and take part in the team's support and release rotations Make performance measurable and enforced - benchmark suites, per-subsystem budgets, and regression gates in CI instead of surprises at a customer site Be the hands-on authority on thread safety: ownership models, lock hierarchies, memory-order reasoning, and eliminating whole classes of races through sanitizers, stress and soak testing Ensure the product holds across the complete operational domain it is used in - every supported device, load profile, and deployment topology, not only the configurations that appear in a demo Improve debuggability so that factory deployment and support scale: tracing, structured logging, runtime metrics, crash and core-dump handling, symbols for stripped release binaries Carry performance and stability into the Plugin SDK and its C ABI, where third-party plugins meet vendor control loops running at 1 kHz Investigate complex issues across software, OS, network, and hardware boundaries - including the hardest escalations from the field Partner with the platform architect on performance-critical design: propose and implement improvements within the platform's performance budgets and hot-path interface contracts, and feed measurements back into how those budgets are set Mentor engineers in performance, concurrency, and troubleshooting through code reviews, deep-dive sessions, design discussions and technical guidance - without producing overhead Essential Skills: 7+ years of professional software engineering experience, with strong hands-on C++ development Based in Munich or open to relocate - we support relocation and visa sponsorship Strong written and verbal communication skills in English Strong experience with modern C++, ideally C++17 or C++20, including templates and compile-time design Proven performance engineering: profiling before optimizing, reading flame graphs and hardware counters, and reasoning about tail latency and jitter rather than averages A track record of shipped performance work: improvements you carried from measurement through merged code to sustained enforcement in CI - not benchmarks in isolation Strong experience with multi-threaded and concurrent programming: memory models, atomics, lock-free patterns, and the judgment to know when a plain mutex is the right answer Exposure to real-time or near-real-time systems on Linux is strongly preferred: scheduling policies, preemption, priority inversion, CPU affinity, and the usual sources of jitter - deep prior RT experience is a plus, not a gate; the performance fundamentals matter more Strong debugging skills using GDB, sanitizers (ASan/TSan/UBSan), Valgrind, perf, strace, ltrace, tcpdump, and core dumps Solid understanding of Linux internals: processes, threads, IPC, signals, scheduling, memory management, buffering, and dynamic linking Experience with CMake and compiler toolchains (GCC, Clang) Experience writing automated tests, including unit tests, integration tests, and hardware-related test strategies, as well as benchmarks and stress/soak tests A pragmatic, team-first senior mindset: you optimize the things that matter to the product and stop when the budget is met; you share reviews, support, and release duties in a small senior team; you make your specialty a capability of the whole team rather than a silo - and you would rather ship a 30% win this week than discuss a 3% win for a month Beneficial Skills: Database internals: storage and index structures, concurrency control, MVCC, transaction and cache design - our Blackboard is essentially an in-process typed store Contributions to high-performance or systems software: allocators, runtimes, engines, databases, network stacks, kernels A low-latency background: trading systems, real-time audio or video, telecom, or embedded motion control Extensive template metaprogramming and compile-time computation Knowledge of real-time Linux, kernel scheduling, IRQ handling, kernel/user-space boundaries, and latency measurement with cyclictest, ftrace or eBPF C++ ABI and plugin / shared-library API design that stays stable across compilers and toolchain versions Hands-on experience with instrumentation profilers such as Tracy (we use it), as well as perf, VTune, or similar Windows internals and the MSVC toolchain - parts of the platform also ship on Windows Networking fundamentals: TCP/IP, UDP, sockets, latency, buffering, and packet flow Experience designing maintainable architectures - clear ownership, separation of concerns, testability - in systems constrained by time, not only by features What we offer A dynamic high-tech company, combined with financial soundness and world-class investors. Join an interdisciplinary, international team with 60+ different nationalities in a collaborative work environment. Lots of development opportunities as we continue to grow. Challenging tasks and impactful projects alongside experts that enable professional and personal growth. Corporate Benefits Program covering health, mobility, and learning for 100€ net per month. Modern office facilities with a rooftop terrace overlooking Munich, free drinks & fruits, and regular company events contribute to a good working environment About us Agile Robots SE is an international high-tech company based in Munich, Germany with a production site in Kaufbeuren and more than 3500 employees worldwide. Our mission is to bridge the gap between artificial intelligence and robotics by developing systems that combine state-of-the-art force-moment-sensing and world-leading image-processing technology. This unique combination of technologies allows us to provide user-friendly and affordable robotic solutions that enable intelligent precision assembly. This is made possible by our employees, who bring out the best in each and every day with creativity and enthusiasm. Become part of this team and shape the future of robotics with us! We are proud of our diversity and welcome your application regardless of gender and sexual identity, nationality, ethnicity, religion, age, or disability. Find Jobs in Germany on Arbeitnow

About the role: You deploy our software at customer sites, integrate it with on-site systems, troubleshoot issues, and feed precise findings back to the engineering team. When you're not traveling, you'll contribute directly as a software engineer to our product codebase. Responsibilities : Install, configure, and validate our software in on-premise customer environments Investigate and resolve issues on site; create minimal repros and hand over to Engineering as needed Integrate with customer infrastructure and verify end-to-end workflows Provide concise field feedback that informs product priorities Act as a development team member when not traveling, applying your on-site knowledge to guide Design and implementation towards impactful outcomes Requirements: Degree in Computer Science, Information Technology, Mechatronics, or equivalent experience Strong C# skills Experience with desktop/UI frameworks (WPF, Avalonia) Enthusiasm for robotics and industrial automation Willingness to travel at least 40% Excellent English communication skills Nice to have: Experience with one or more of: robotics, machine vision, OpenGL, PLCs, or Modbus C++ experience What we offer A dynamic high-tech company, combined with financial soundness and world-class investors. Join an interdisciplinary, international team with 60+ different nationalities in a collaborative work environment. Lots of development opportunities as we continue to grow. Challenging tasks and impactful projects alongside experts that enable professional and personal growth. Corporate Benefits Program covering health, mobility, and learning for 100€ net per month. Modern office facilities with a rooftop terrace overlooking Munich, free drinks & fruits, and regular company events contribute to a good working environment About us Agile Robots SE is an international high-tech company based in Munich, Germany with a production site in Kaufbeuren and more than 3500 employees worldwide. Our mission is to bridge the gap between artificial intelligence and robotics by developing systems that combine state-of-the-art force-moment-sensing and world-leading image-processing technology. This unique combination of technologies allows us to provide user-friendly and affordable robotic solutions that enable intelligent precision assembly. This is made possible by our employees, who bring out the best in each and every day with creativity and enthusiasm. Become part of this team and shape the future of robotics with us! We are proud of our diversity and welcome your application regardless of gender and sexual identity, nationality, ethnicity, religion, age, or disability. Find more English Speaking Jobs in Germany on Arbeitnow

You will help reduce Firefox's WebCompat bug backlog by finishing or verifying the diagnosis of the long tail of site-breakage bugs, and by writing interventions or simple fixes (often with AI assistance). You turn a large queue of reported breakages into diagnosed, actionable, or fixed bugs. Responsibilities Finish diagnosing, or verify the diagnosis of, long-tail WebCompat bugs. Write WebCompat interventions where appropriate. Write simple fixes (AI-assisted) and land them. Reproduce and triage incoming site-breakage reports. Required qualifications Solid web development (HTML, CSS, JavaScript) and comfort debugging real-world site breakage. Fluent with browser devtools and cross-browser diagnosis. Comfortable using AI tooling to speed up diagnosis and fixes. Preferred Gecko knowledge is a strong plus (but can be taught). Prior WebCompat or web-standards experience. Find Jobs in Germany on Arbeitnow

The role You will help the Firefox DOM LWS team to implement tasks for Storage Encryption everywhere, helping to drive the in-progress project through to completion . Responsibilities Contributing to delivering Storage Encryption Everywhere in Gecko, which may include tasks such as migrating data between schemas, implementing data storage in PBM and integration testing. Write and pass Web Platform Tests, and add Gecko tests as needed. Work through code review with the relevant Gecko module owners and iterate to landing. Surface and help resolve any specification questions the implementation raises. Shepherd the feature through Nightly, Beta, and Release. Fix correctness, performance issues and regressions. Definition of done Ship Storage Encryption Everywhere to release channel. Fix triaged and prioritized issues. Required qualifications Strong C++. Substantial experience in a browser-engine codebase, ideally Firefox/Gecko. Substantial experience in databases. Familiarity with web standards and Web Platform Tests. Strong debugging and optimization in a multithreaded codebase. Comfort working in the open: public bugs, code review, and upstream landing. Preferred Prior contributions to Gecko or another major browser engine. Familiarity with the relevant standards body and specification process. Find more English Speaking Jobs in Germany on Arbeitnow

The role You will help the Firefox DOM Core team improve the health of the Session History area. You will write tests to improve the coverage; you will fix tests and/or problems to improve the Gecko correctness. Responsibilities Write Web-Platform tests to improve the coverage, and Gecko mochitests as needed Fix the problems and pass the tests to improve the Gecko correctness Work through code review with the relevant Gecko module owners and iterate to landing Definition of done Improved Session History test coverage and code correctness in Gecko, measured by passed test cases, allowing the team's senior engineers to focus on security, performance and strategic projects. Required qualifications Substantial experience in a browser-engine codebase or in automating for a browser-engine, ideally Firefox/Gecko. Solid Javascript and applying that language skill to write automated tests. Proficiency in and experience developing software in C++. Strong debugging skills in a mature larget codebase. Comfort working in the open: public bugs, code review, and upstream landing. Preferred Prior contributions to Gecko or another major browser engine. Familiarity with web standards and Web Platform Tests. Find Jobs in Germany on Arbeitnow

Berlin • Cybersecurity & AI Startup • Recently Funded A newly funded cybersecurity startup in Berlin is looking for a Head of Engineering to join as a team member and help design the core security, identity, and enforcement foundations of a next-generation AI-powered security risk management platform. We are an early-stage startup founded by experienced cybersecurity leaders with backgrounds in Israeli Intelligence units. We are looking for a hands-on Head of Engineering . If you are passionate about cybersecurity and AI tech, thrive in fast-paced startup environments, and enjoy building complex platforms from the ground up, this is an opportunity to make a real impact. We're building a next-generation cyber enforcement platform that helps enterprises understand, measure, and reduce identity risk at scale. Our goal is to turn complex identity and security data into clear, actionable risk insights that CISOs and CTOs can trust. You will work from scratch on core platform components from day one, shaping how modern enterprises manage and reason about risk using cloud-native systems and AI-driven analysis and automated enforcement through AI Agents. Key Responsibilities Own delivery. You decide what ships and when, and the roadmap moves at the speed you set Own architecture. Design the systems, make the build-vs-buy calls, set the standards everyone builds against Build the engineering culture from the ground up. Planning, code review, on-call, incident response. Whatever process exists is the process you wrote Grow the five engineers you inherit into the team that scales with us Hire as we grow, and own the bar Shape what we build next, alongside product and the founders Ship fast while we're SOC 2 and ISO 27001 certified. Security engineering isn't a side quest here, it's the product Must have 10+ years of professional software engineering experience 3+ years of experience leading engineering teams directly 3+ years of GoLang experience 3+ years experience with AWS in production environments Hands-on mentality can design deep security architecture yourself Has hired and scaled a team from under 10 to 20+, or clear evidence you can Ability to context-switch between technical topics and people leadership Knowledge of Experience supporting production SaaS platforms Cloud infrastructure and Kubernetes experience on AWS Working with at one of those Postgres, AWS Bedrock, Neo4J, Data bricks, Snowflake Has worked at an early-stage company, or clear evidence of operating without process in place Based in Berlin or willing to relocate Business English Strong execution mindset and comfort operating under ambiguity Comfortable working directly with founders and senior stakeholders Ability to build things from scratch at early stage startup High ownership mentality, startup mindset, and ability to move quickly. Experience in early stage startup or scale-up environments Low ego, high commitment, and a true tech startup mentality . Strong problem-solving skills and ability to work in a collaborative environment. Nice to have Cybersecurity, identity, IAM or infrastructure products Experience with SOC 2 or ISO 27001 in an engineering org ML or AI systems in production German Language You are a fan of rock or metal music Benefits Team Member Equity — ESOPs in a cybersecurity company. Competitive Compensation — salary aligned with market, flexible early-stage arrangements possible. Fresh Funding Secured — immediate runway to build, hire, and execute fast. Security Contribution — contribute to security architecture across identity, AI agents, and enforcement. High Autonomy — freedom to design and build without corporate overhead. Work with a Technical CEO — fast iteration, strong alignment, clear direction. Cutting-Edge Domain — identity security, SaaS-to-SaaS access, AI agent governance. Massive Learning Curve — quickly gain depth in cybersecurity, identity, and AI systems. Fast Career Path — opportunity evolve into leadership as we scale the engineering team Berlin Location — top-tier tech environment with strong cybersecurity and AI ecosystems. Direct Impact — your architecture and code become the foundation of the entire platform. Best Equipment and Tools - High quality equipment and modern tools to help you do your best work from day one. Team Offsites - Regular team offsites designed to build strong connections, alignment, and shared momentum. Find more English Speaking Jobs in Germany on Arbeitnow

At Ripple, we're building a world where value moves like information does today. It's big, it's bold, and we're already doing it. Through our crypto solutions for financial institutions, businesses, governments and developers, we are improving the global financial system and creating greater economic fairness and opportunity for more people, in more places around the world. And we get to do the best work of our career and grow our skills surrounded by colleagues who have our backs. If you're ready to see your impact and unlock incredible career growth opportunities, join us, and build real world value. About the Cash Forecasting team: Cash Forecasting is our AI-amplified treasury solution that helps CFOs and treasury teams move beyond error-prone spreadsheets to achieve real-time cash visibility and predictive accuracy. The platform integrates seamlessly with major ERPs and banking systems to automatically capture, categorise, and analyse transactional data across multiple currencies and business units. Leveraging our proprietary GSmart AI technology, the solution continuously learns from historical cash flows, sales data, and treasury information to automatically select optimal forecasting algorithms and improve accuracy by over 30%. You'll work on sophisticated Ruby on Rails and React software that turns diverse financial data into clear analysis, giving customers sharp insight and forecasting through intuitive dashboards. This is a critical platform moving over $100 billion in daily cash flow for enterprise customers across 40+ countries, built to hold enterprise-grade security and scalability at that scale, every single day. What You'll Do: Design, build, and maintain backend services and APIs that power the Cash Forecasting platform, while remaining comfortable picking up frontend work when the task calls for it Work across a large, sophisticated, multi-tenant SaaS codebase, writing code that's built to scale across enterprise customers and their data Own the data layer, schema design, query performance, and data integrity - with a strong emphasis on PostgreSQL and SQL more broadly Write and maintain thorough test coverage using RSpec, treating testing as a first-class part of delivery Package and deploy services using Docker, and work within our AWS-based cloud infrastructure Write scripts and tooling to automate repetitive work, support data migrations, and keep the team moving quickly Instrument the systems you build with strong observability practices -logging, metrics, and tracing — to catch and resolve issues before they impact customers Benchmark and profile code to identify performance bottlenecks, and make evidence-based decisions about where to optimise Collaborate closely with product managers, designers, and fellow engineers to translate business and customer needs into robust technical solutions Participate in code reviews and technical design discussions, contributing to the team's overall growth and improvement Be a champion of the YBIYRI ethos (you-build-it-you-run-it), which includes participating in the on-call pager rotation What You'll Bring: 4-8 years of professional software development experience, ideally including full-stack work with a backend lean Strong SQL fundamentals; hands-on experience with PostgreSQL ideal Comfortable working within large, sophisticated, existing codebases and making changes safely Scripting ability for automation and tooling (language-agnostic) Experience with Docker or other containerisation technologies Proven Git proficiency, including collaborative branching workflows Proficiency in at least one major programming language (such as Ruby, Python, or Java) Experience employing AI tools throughout the development lifecycle to speed up problem-solving and delivery Experience testing with RSpec Preferred Knowledge / Experience: Experience with Ruby or Ruby on Rails is a strong plus - while we value the ability to learn quickly across languages, familiarity with our primary stack will help you ramp up faster. Frontend experience, ideally with React, and the ability to contribute there when needed Experience with, or solid understanding of, AWS Experience building or maintaining multi-tenant, enterprise SaaS platforms Familiarity with observability tooling and practices (logging, metrics, tracing, alerting) Experience benchmarking and profiling code for performance Experience in the financial industry, particularly treasury, payments, FX, or ERP systems WHO WE ARE: Do Your Best Work The opportunity to build in a fast-paced start-up environment with experienced industry leaders A learning environment where you can dive deep into the latest technologies and make an impact. A professional development budget to support other modes of learning. Thrive in an environment where no matter what race, ethnicity, gender, origin, or culture they identify with, every employee is a respected, valued, and empowered part of the team. In-office collaboration for moments that matter is important to our culture, and we give managers and teams the flexibility to decide which 10+ days a month they come in. Bi-weekly all-company meeting - business updates and ask me anything style discussion with our Leadership Team We come together for moments that matter which include team offsites, team bonding activities, happy hours and more! Take Control of Your Finances Competitive salary, bonuses, and equity Competitive benefits that cover physical and mental healthcare, retirement, family forming, and family support Employee giving match Mobile phone stipend Take Care of Yourself R&R days so you can rest and recharge Generous wellness reimbursement and weekly onsite & virtual programming Generous vacation policy - work with your manager to take time off when you need it Industry-leading parental leave policies. Family planning benefits. Catered lunches, fully-stocked kitchens with premium snacks/beverages, and plenty of fun events Benefits listed above are for full-time employees. Ripple is an Equal Opportunity Employer. We're committed to building a diverse and inclusive team. We do not discriminate against qualified employees or applicants because of race, color, religion, gender identity, sex, sexual identity, pregnancy, national origin, ancestry, citizenship, age, marital status, physical disability, mental disability, medical condition, military status, or any other characteristic protected by local law or ordinance. Please find our California, UK/EU, Singapore, DIFC, ADGM, Australia, and Switzerland Applicant Privacy Notice for reference. Find more English Speaking Jobs in United Kingdom on Arbeitnow

Company: Project X Ltd. Location: Toronto, Ontario Employment Type: Full Time or 6 Month Contract Location: (Hybrid working model) Salary Range: $130,000 - $160,000 CAD or Hourly Rate About Project X Ltd. Project X Ltd. builds high-performing teams of talented, client-focused problem solvers who thrive on complex data challenges. Guided by our values of Care, Bravery, Excellence, and Innovation, we value people who take ownership of their work, step up when needed, and get things done. Our team members are trusted advisors who collaborate closely, think creatively, and deliver practical, high-quality solutions for our clients. We look for individuals who are curious, accountable, eager to learn, and supportive of their teammates—because at Project X, our people are what make us great. Role Summary We are seeking a Senior Data Platform Engineer for our enterprise client. This is a senior, hands-on role focused on modernizing and strengthening a data platform built around Snowflake, AWS, dbt Core, GitHub and Terraform. You will establish reusable platform capabilities, engineering standards and automation that help data engineering teams deliver reliably and efficiently. The role combines deep data-platform expertise with software engineering, DevOps, security and operational reliability. You will help shape technical decisions while building and implementing the patterns needed to support production delivery. Key Responsibilities Design and evolve core data platform capabilities across Snowflake and AWS, creating reusable architecture, engineering standards and platform patterns. Establish and mature dbt Core standards for project structure, data modelling, testing, documentation and deployment. Build and enhance GitHub-based CI/CD pipelines and repeatable deployment processes across development, UAT and production environments. Develop and maintain infrastructure as code using Terraform, including Snowflake roles, grants, integrations and platform resources. Strengthen role-based access control, IAM, PII protection, masking and secure data-access patterns. Improve production observability, monitoring, data quality, performance, recovery and operational reliability, including standardized metrics, logs and tracing. Evaluate and implement scalable batch, streaming, CDC and orchestration patterns, considering Snowflake-native capabilities and Airflow where appropriate. Partner with Architecture, Security, Data Engineering, Analytics and Data Science to shape future capabilities and deliver practical platform improvements. Provide hands-on technical leadership through design and code reviews, mentoring, documentation and clear operational standards. What We're Looking For – Required Qualifications 8+ years of engineering experience, including at least 5 years in data engineering or data platform engineering. Strong hands-on Snowflake experience and expert-level SQL. Strong experience with dbt Core, modern data modelling and ELT patterns, including testing, documentation and deployment practices. Strong AWS cloud engineering experience. Strong Terraform experience, including applying infrastructure-as-code practices to data platform resources and access controls. Strong experience with Git/GitHub, CI/CD and controlled deployments across multiple environments. Strong understanding of RBAC, IAM, PII protection, masking and data governance. Experience with production monitoring, observability, performance improvement, recovery and operational reliability. Experience with OpenTelemetry or similar observability frameworks for standardized metrics, logs and distributed tracing across data pipelines and platform services. Strong Python or comparable programming skills, with experience in modern batch,

The CodeCargo Platform Improve productivity at every level of your engineering organization. GitHub Migration Move thousands of repositories and pipelines onto GitHub. For Compliance Score every workflow and auto-remediate violations. For Security Kernel-level firewall for every GitHub Actions run. For Devs Bulk changes, self-service, and a live service catalog. See pricing for the full platformView pricing ServicesPricing ROI Calculator Cost Savings Learn more Docs Blog Sales Kit LoginStart Free Back to all positions Frontend Software Engineer Remote, Hybrid Engineering Full-time We're looking for a Frontend Software Engineer to join our team and help craft the user experience that brings our platform to life. As a frontend engineer, you'll build fast, intuitive interfaces, design polished interactions, and collaborate closely with product and design to deliver exceptional user experiences. You'll be deeply technical, but also comfortable working cross-functionally — with product, design, and backend engineering teams. This is not a simple UI-assembly role — it's about building real, production-grade interfaces, solving hard UX and performance challenges, and helping shape how our product looks and feels as we scale. Responsibilities Build and maintain high-quality user interfaces using Next.js and modern web technologies Develop frontend components, pages, and interactions that are fast, accessible, and visually polished Collaborate with product and design teams to translate requirements into intuitive user experiences Integrate frontend applications with backend APIs and real-time systems Optimize rendering, performance, caching, and frontend architecture for scale Ensure consistency and quality through component libraries, design systems, and best practices Participate in code reviews, design discussions, and feature planning Contribute to tooling, documentation, and developer experience improvements on the frontend Requirements 3+ years of experience in frontend engineering or a closely related role Strong proficiency with React and Next.js (server components, routing, data fetching) Deep understanding of modern JavaScript/TypeScript, HTML, and CSS Experience building production-quality interfaces in fast-paced environments Familiarity with frontend performance optimization, accessibility, and responsive design Comfortable integrating with APIs, real-time data sources, and backend systems Strong debugging and problem-solving skills across modern frontend stacks Strong written and verbal communication skills Bonus (but not required) Experience with design systems, component libraries, or UI frameworks Familiarity with real-time or event-driven UI patterns Experience with edge rendering, hybrid SSR/ISR patterns, or Next.js advanced features Prior startup or scale-up experience Contributions to open-source JavaScript or frontend tooling Why This Role If you thrive on building beautiful, performant interfaces and care deeply about user experience — this role gives you wide ownership, meaningful impact, and the opportunity to help define the frontend foundation of our platform. You'll shape the product experience from the outside in, backed by a highly collaborative team. Why CodeCargo You'll be joining a team of engineers, product thinkers, and builders who have successfully exited startups and know how to build things that scale. At CodeCargo, we're solving hard problems with elegant tools — and giving developers superpowers along the way. CodeCargo is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. Benefits CodeCargo offers comprehensive benefits to ensure that everyone is taken care of: 401(k) + company match Healthcare, dental, and vision Unlimited paid time off Equity options How to Apply Interested in this position? Send your resume to careers@codecargo.com with the subject line "Frontend Software Engineer". For Devs Multi-Repo Code Editor Agentic Service Catalog Self-Service For Enterprise Automation Compliance Private Marketplace SaaS, On-Prem, Hybrid Solutions Migrate to GitHub Actions Secure your Automations Golden Path Workflows Enhance Inner Source ROI Calculator Compare vs Harness All comparisons Company Docs Blog Careers Legal © 2026 CodeCargo. All rights reserved.