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# Sebastian Messingfeld
Ships production-ready AI agents and evaluation frameworks at Eurowings Digital.

## About

Sebastian Messingfeld builds end-to-end web and mobile experiences safely and at scale at Eurowings Digital. He primarily focuses on taking AI features out of the prototype phase and making them reliable enough for real-world production.

His recent work revolves around the information experience on eurowings.com, where he improves on-site search and builds smarter contact flows. He specifically tackles the difficult problem of testing AI agents and RAG systems, building automated evaluation frameworks that catch hidden regressions before they reach users.



## Past Sessions

### World Congress 2026 Europe · July 8, 2026
Berlin, Germany
- [Testing AI Agents: Automated Evaluation for Chatbots & RAG Systems](https://www.wearedevelopers.com/videos/100300-testing-ai-agents-automated-evaluation-for-chatbots-rag-systems) · 30 min · 🎥 Watch recording



## Videos

- [Testing AI Agents: Automated Evaluation for Chatbots & RAG Systems](https://www.wearedevelopers.com/videos/100300-testing-ai-agents-automated-evaluation-for-chatbots-rag-systems) · Sebastian Messingfeld


## Links

- [X](https://twitter.com/_messeb)
- [LinkedIn](https://www.linkedin.com/in/messingfeld/)