Developer Experience Engineer

Job summary

Responsibilities

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.

• Own DevExp as a product surface — wherever the bottleneck is, that's where you ship next. One sprint that might be the API contract, the next it's the dashboard onboarding, the…
• Partner with platform engineering on API design before it ships, not after — bring the developer-and-agent perspective into the room when the contract is being decided
• Work with product engineering on the developer-facing surfaces of the dashboard — playground, API keys, usage, request inspectors, webhook debugging — bringing the DevExp lens to…
• Make BFL the best visual AI platform for agents to use. Own the MCP server, skills, agent onboarding paths, and the machine-readable surfaces of the platform.
• Own the portfolio of entry points developers and agents reach for — SDKs (Python, TypeScript, more on demand), MCP server, skills, OpenAPI / typed surfaces — and treat them as a…

What they're looking for

• 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…
• 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.

Tech stack

• Python
• TypeScript
• React
• Go
• Rust