Backend & AI Engineer · Java / Python / Spring Boot · AI Agents & LLM apps · iOS on-device ML · 📍 Hamburg, Germany 🇩🇪
- 🎙️ Tonota — Privacy-first iPhone voice memo app with on-device WhisperKit transcription + local LLM polishing. Zero cloud, zero account. Live on the App Store — shipped in 9 days 🚀
- ⚽ Whisper Coach — Voice-driven AI football tactics assistant: team photo → lineup → live suggestions. Built at Hamburg Hackathon 2026
- 🧩 Agent skills — Making composable skills for Cursor & Claude that actually get stuff done, not just look cool in a demo
- ☕ Java / Python / Spring Boot + AWS — Still my bread and butter. Backends that don't fall over at 3 AM
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🎙️ Tonota Privacy-first iPhone voice memo app — on-device transcription (WhisperKit) + local LLM polishing. Zero cloud, zero account, 10 languages. Live on App Store ↗ |
Smart job application form auto-filler — keyword + AI semantic matching (Claude / GPT) for forms in EN / DE / ZH. Live on Chrome Web Store. |
Chrome extension for language learning — TTS + LLM practice while you browse. Live on Chrome Web Store. |
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Modular agent skills for daily work — markdown-first, composable, built for Cursor & Claude. |
AI football coaching assistant — team photo → auto lineup → live voice tactics → post-match report. Flutter + FastAPI + GPT-4o, shipped at Hamburg Hackathon 2026. |
Flutter calendar assistant powered by LangChain / LangGraph — born at a hackathon |