Product engineer and toolmaker, 15+ years in Berlin. Currently building AI-native product capabilities at Stack Overflow: MCP, LLM orchestration, retrieval systems.

I optimize for meaningful work and building things real people use.

Projects

Active

• 🎙️ voxclip Privacy-first CLI for voice recording and transcription, runs locally with Whisper. (Go)
• ✍️ scribae Turns Markdown notes into SEO briefs, drafts, metadata, and translations with LLMs. (Python)

In Development

• 🧰 tessariq Git-native infrastructure for agent work: sandboxed runs, reviewable results, artifacts that stay yours. (Go)
• 🚉 taskrail Deterministic execution harness for LLM agents: goals in, validated results out. (Go)

Notable past work

• Created Zally, Zalando's API linter. Won Hack Week, grew to a dedicated team, listed in the Thoughtworks Technology Radar (2021).
• Led Zalando's API Guild and co-shaped their open-source API Guidelines.
• Wrote No More Technical Debt: Invest in Quality for InfoQ (2014, with Eberhard Wolff).

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TypeScript · Go · Python · Kotlin · C# · Java