Developer Experience Engineer

4+ years building software, with meaningful time on developer-facing products — SDKs, APIs, dashboards, consoles, platforms developers actually use

Full-stack comfortable. TypeScript / React / Next on the front, Python (and ideally Go or Rust) on the back. You don't need a separate person to wire the two halves of a feature together.

Deep instincts on API design — you have opinions about error formats, pagination, async job shapes, breaking changes, and you've lived with the consequences of bad ones

Fluent in the 2026 agent stack — MCP, tool use, the major agent runtimes — and you know what breaks when an LLM is the one reading your error message or browsing your API

You've shipped developer-facing product that real external developers depend on. Not internal tooling.

You ship. This is product engineering, not product management with an IDE open.

Background at a developer platform where DevExp was a top-level metric (Stripe, Vercel, Cloudflare, Modal, Replicate, Resend, Linear, Anthropic platform, etc.)

You've built or meaningfully contributed to an MCP server real users / agents rely on

Experience with media-generation or other high-latency, async, job-shaped APIs — and the UX puzzles that come with them (polling, webhooks, partial results, cost surprises)

A public surface — OSS, a writeup, a dashboard you're proud of — that lets us see your taste before the interview

We’re a distributed team with real offices that people actually use. Depending on your role, you’ll either join us in Freiburg or SF at least 2 days a week (or one full week every other week), or work remotely with a monthly in-person week to stay connected. We’ll cover reasonable travel costs to make this possible. We think in-person time matters, and we’ve structured things to make it accessible to all. We’ll discuss what this will look like for the role during our interview process.

Obsessed. We are a frontier research lab. The science has to be right, the understanding deep, the product beautiful.

Low Ego. The work speaks. The best idea wins, no matter who said it. Credit is shared. Nobody is above any task.

Bold. We take the ambitious bet. We ship, we do not wait for conditions to be perfect.

Kind. People over politics. We treat each other with genuine warmth. Agency without empathy creates chaos.

If this sounds like work you’d enjoy, we’d love to hear from you. Base Annual Salary:

EU €140,000 - €190,000 + Equity