AI Fullstack Engineer (Python, Java, Typescript)

Your responsibilities, Build RL environments end-to-end: frontend interfaces, backend services, APIs, data models, and workflows - using technologies like TypeScript, Python/FastAPI, Java, and Postgres., Build tooling and shared services, like agentic systems and frontends for trajectory review, verifier debugging, and reward hacking checks., Work with AI coding tools (Claude Code, Codex, and similar) to generate ideas for extending them and building new tooling on top., Design efficient data models and REST APIs., Develop internal tools and libraries (e.g. a data visualization library) to improve productivity across the engineering team. What we offer, Sport subscription, Private healthcare, Flat structure, Small teams, International projects