Jobs in Germany
In Short: We're looking for an experienced backend engineer to help us scale our platform as we grow.
About Langfuse
We are building the fastest growing open-source LLM engineering platform. We help engineers and enterprises build and run LLM applications at scale.
We've raised $4m from Y Combinator, Lightspeed and General Catalyst.
Thousands of teams and engineers use Langfuse daily. Thousands are joining every month.
We're a small, focused team working in-person from Berlin, Germany.
What you'll do
Scale our platform to handle billions of events per day via our SDKs
Optimize complex database queries in Postgres and Clickhouse
Build and maintain async workflows and background processing
Help customers deploy Langfuse in self-hosted environments
Write infrastructure code and manage scaling with custom metrics
Work on our Python and TypeScript SDKs
Tech
Frontend and Backend in Typescript (including Express, NextJs, Tailwind, Prisma, tRPC)
Clickhouse, Postgres, Redis, S3
Client facing SDKs in Python and Typescript
You should be familiar with a majority of these but we trust that you can pick up a new language/framework quickly.
What we're looking for
3+ years backend or full-stack development experience
Experience building highly reliable, scaling infrastructure
Interest in open source software and talking to users
Hard worker who thrives in a small, accountable team
CS or quantitative degree preferred
Impressive achievements (professional or otherwise) – really excited about these.
Bonus points: Former founder, experience in SDK design and DX, ML/AI background
Why Langfuse?
Building for very sophisticated technical users
Competitive salary & equity compensation
You are still joining really early
Strong in person culture (Berlin-Mitte)
Extreme autonomy
Performance and learning focused culture
2 short scheduled meetings per week
Process
Fill out application and jump on a intro call with our CTO
Technical Deep Dive interview (90min)
Super Day ( half or full day in Berlin Office)
Meet the other founders (short calls)
Decision & Offer
Links
Project you could have built: Infrastructure Evolution Blog Post
Our codebase: GitHub Repository
Compensation: €70K – €130K • 0.1% – 0.35%
- • Salary + Equity €70K – €130K • 0.1% – 0.35%
Estimated Salary after Taxes *
| Salary | Monthly | Yearly |
|---|---|---|
| 70.000,00 € | 3.590,52 € | 43.086,20 € |
| 130.000,00 € | 6.230,27 € | 74.763,27 € |
Income Tax for 70.000 € in Germany →
* Your estimated salary may change based on external factors, use our salary calculator
Jobs at Langfuse
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70.000 - 130.000 €
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70.000 - 130.000 €
