AI Engineer

Descrizione del lavoro

Own Windmill's agentic coding and tool/system-building pipeline end-to-end - from the AI backend (planning, tool use, retrieval, self-correction) to the UX and developer experience that wraps it. The bar: an agent that reliably goes from a natural-language spec to a working, deployed workflow or app - and that developers actually enjoy using.Benchmarking: build and maintain the eval harness, task corpus, scoring, and regression tracking. Every prompt / model / tool change is measured.Agent loop: design and improve planning, tool use, self-correction, retrieval, execution feedback, multi-file editing, test-driven iteration.Integration & DX: own the full surface - UI flows, editor integration, feedback loops, error states - so the experience is polished end-to-end, not just the model calls.Prompts & models: systematically optimize prompts; experiment with frontier models (Claude, GPT, Gemini, open-weights); fine-tuning / RL where it pays off.Ship to production: everything you build goes live and is used by thousands of developers.Who we're looking forStrong CS fundamentals - algorithms, systems, distributed systemsSolid programming skills (TypeScript, Rust a plus)Deep understanding of LLMs, agents, eval methodology - you've built and shipped LLM-based systems, not just played with APIsRigorous, empirical mindset - you measure before you claim improvement05 years of experience - we care more about what you've built than years on a resumeExample projects in your first 3 monthsRedesign the agent's multi-step planning so it can scaffold a full CRUD app (frontend + flow + schema) from a single promptBuild a live feedback UI that lets users steer the agent mid-generation - accept, reject, or redirect individual stepsStand up an automated eval pipeline that catches regressions before they ship and benchmarks every prompt/model changeAdd a retrieval layer that pulls relevant Windmill docs, workspace context, and past scripts into the agent's context at the right timeExperiment with frontier models and fine-tuning to push pass rates on complex workflow generationOffer detailsLocation: Paris hybrid (~3 days/week) or remote within FranceSalary: 45K90K gross + top of market for level + 20% bonus on collective milestonesAlso open to: interns / young graduates (56 month internship, 2,0003,000/month, strong CDI potential)