Senior Product Engineer
LangfuseBerlin, Germany • London, England, United Kingdom • Munich, Bavaria, Germany • Paris, Ile-de-France, France • Zurich, Zurich, Switzerland
Posted February 17, 2026
Full Time
About the Company
Langfuse is a open-source LLM engineering platform that helps teams build useful AI applications.
Job Description
Langfuse is a open-source LLM engineering platform that helps teams build useful AI applications. We're looking for a Senior Product Engineer to build features end-to-end, work across the full stack, and talk to users constantly.
Requirements
- Built features or entire products from scratch end-to-end
- Experience building and shipping user-facing products end-to-end, ideally in TypeScript/React and with exposure to data-intensive backends
- Managed projects themselves and developed strong conviction about what to build and how to ship it
- Taste for great developer experience and interest in open source software
- CS or quantitative degree preferred
Benefits
- Flexible work environment
- Opportunity to work with a small, experienced team
- Visibility and impact of work
- Opportunity to work on cutting-edge AI applications
