Agent Harness Engineer
Viktor, Warsaw or Munich onsite +1
What you need
- You've personally built or significantly modified an AI agent harness, and can describe the trade-offs you made.
- You understand how an agent's system prompt, skills, and tools interact on diverse and complex problems, and you've tuned that interplay yourself, not just read about it.
- You've built custom skills, commands, CLIs, or MCP servers to make your own agentic coding faster.
- Agentic coding is your daily workflow, and you've stress-tested models and harnesses across the frontier.
- Systems thinking. You make hard technical trade-offs and design for how things break at scale.
- Speed, with the bar up. You ship today, not Thursday.
- Genuine interest in how AI works. You've read the papers and have opinions about evals.
- Munich or Warsaw, or remote in Europe.