Software Engineer – Full Stack

Software Engineer – Full Stack New York City | Full-Time | On-Site Up to $210K + Equity We're working with a high-growth, category-leading technology company in New York City that is looking to hire an experienced Full-Stack Software Engineer. The company operates at significant scale, with 5M+ customers served, 250K monthly users, 800K app installs in the last year, and 2,500+ hotel partners. You'll be joining a lean, high-ownership engineering team building and scaling a modern marketplace platform. This is an opportunity for a strong product-minded engineer to take end-to-end ownership of features across frontend, backend, APIs, databases, instrumentation, and production systems. What You'll Be Doing Own and deliver full-stack features across key marketplace flows, including search/results, property details, booking, and account experiences Build and ship features end-to-end across the UI, API, data model, instrumentation, rollout, and iteration Develop and contribute to modern frontend applications using React, TypeScript, and Next.js Contribute to a Next.js App Router codebase and establish pragmatic, maintainable engineering patterns Work closely with backend engineers on API contracts, including filtering, pagination, performance, and versioning Design and work with databases, including schema design and query-performance optimisation Build and maintain reliable production APIs and services Improve application quality through automated testing, code reviews, and observability Work with tools such as Playwright and Datadog to improve testing, monitoring, and production reliability Partner closely with Product and Design to translate complex system states into clear and intuitive user experiences Build dashboards, alerts, tracing, and runbooks to strengthen operational readiness Troubleshoot complex production issues and implement preventative measures to reduce regressions Contribute to system architecture, scalability, performance, reliability, and engineering best practices Take ownership of technical projects and drive ambiguous requirements through to completion What We're Looking For 4+ years of professional software engineering experience building production web or mobile applications Strong full-stack engineering experience across both frontend and backend Strong programming experience with JavaScript / TypeScript Professional experience with React Experience working with Next.js, ideally Next.js App Router Experience building and working with production APIs Strong understanding of relational databases, including schema design and query performance Experience working with or navigating Rails / Ruby on Rails codebases Experience owning features end-to-end from implementation through production rollout Strong software engineering fundamentals and problem-solving ability Comfortable working in a fast-paced, high-ownership startup environment Strong product sense and ability to connect technical decisions to UX, conversion, performance, and business impact Able to clearly explain technical decisions, trade-offs, and code you have personally written Strong communication and collaboration skills Nice to Have Experience at a high-bar engineering organization such as Stripe, Airbnb, or a similarly rigorous technology company Marketplace, e-commerce, travel, hospitality, booking, or other high-volume consumer product experience Experience with Playwright and Datadog Experience with observability, monitoring, tracing, dashboards, and production reliability Experience working with large-scale or high-traffic consumer applications Experience with product-led engineering teams and rapid-growth startups Experience improving application performance, conversion, reliability, or customer retention Experience working across complex frontend and backend systems If you're an experienced Full-Stack Software Engineer based in New York City and are looking for a high-ownership role within a fast-growing technology company, we'd be interested in hearing from you.