Hi there 👋
I build web, mobile & backend — end to end.
Freelance fullstack developer with 6 years shipping product end-to-end. Most recently founding engineer at Joaia, a Swiss AI travel startup — iOS, Android, web and backend, including a brownfield integration into Zürich Tourism's city guide.
What I do
AI engineering
LLM integration (Azure OpenAI, OpenAI, Anthropic), RAG pipelines, document ingestion, and custom voice with ElevenLabs.
Mobile
React Native, Expo & EAS. Shipped cross-platform apps to the App Store and Play Store, including brownfield integrations.
Web & backend
Next.js, NestJS, Angular, Node, Java & Spring Boot. End-to-end delivery from greenfield to production.
Cloud & DevOps
Azure, Docker, Kubernetes, Terraform, GitLab & GitHub CI/CD, observability and identity wiring.
Selected work
React Native integration embedding Joaia AI-guide features into Zürich Tourism's app — 100K+ downloads. Custom API layer bridging two backends, grounded in curated Zürich content.
Cross-platform AI travel-guide app on iOS & Android that works anywhere in the world. Local guides with custom voices, voice/text chat with TTS/STT, photo recognition, and a map-based Explore page.
Web platform letting businesses author custom AI local guides — personality config, custom voice creation, and a publish-to-app flow. Engineered the RAG pipeline end-to-end.
Plugin for efficient file navigation in Obsidian. 6k downloads.
Tech stack
Get in touch
Available for freelance fullstack work — remote or hybrid from Salzburg (CET). The fastest way to start is a short email or a quick call.