Senior Product Engineer
full-time•remote•Remote•$90k - $160k
Summary
About this role
The Role
Own a feature from user problem
to changelog post.
to changelog post.
At Langfuse, product engineers own everything end-to-end: talking to users, writing the spec, shipping the code, writing the docs — and the changelog post with your name on it.
Recent examples owned by single engineers: the Langfuse for Agents release, TypeScript SDK v4 rewrite on OpenTelemetry, hosted MCP server for prompt management. That is the scope here.
About Langfuse
Open Source LLM Engineering Platform — the Datadog of AI observability. Trusted by 19 of the Fortune 50, 2k+ customers, 26M+ monthly SDK downloads. Now part of ClickHouse.
What You'll Do
01
Own features end-to-end — User calls, spec writing, code, docs, and the public changelog post. No handoffs.
02
Work the full stack — React frontend, Next.js backend, ClickHouse analytics, Python and TypeScript SDKs. Touch whatever the feature needs.
03
Talk to users constantly — Calls, community channels, support tickets. This is how we build conviction about what to build next.
04
Ship during Launch Weeks — We drop a new feature daily for a week, four times a year. Engineers present to the community what they built.
What We're Looking For
- Has built features or entire products from scratch end-to-end
- Experience shipping user-facing products in TypeScript/React with data-intensive backends
- Can manage yourself — strong conviction about what to build and how to ship it
- Taste for great developer experience: API design, UI details, clear documentation
- CS or quantitative degree preferred
Bonus: ClickHouse or analytics DB experience, former founder, popular OSS contributions, ML/AI background
Salary
€90,000 – €160,000
Location
Remote EU · 1 week/month Berlin
Type
Full-time
Process
Offer in < 7 days
About Langfuse
Langfuse is the open-source LLM engineering platform designed to help teams build production-grade LLM applications faster. It provides full-context tracing, cost and latency metrics, LLM-as-a-judge evaluations, prompt management, and experimentation tools. Used by thousands of teams worldwide.
Ready to join Langfuse?
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Frequently Asked Questions
What does Langfuse pay for a Senior Product Engineer?
Langfuse offers a competitive compensation package for the Senior Product Engineer role. The salary range is USD 90k - 160k per year. Apply through Clera to learn more about the full compensation details.
What does a Senior Product Engineer do at Langfuse?
The Senior Product Engineer role at Langfuse involves The Role Own a feature from user problem to changelog post. At Langfuse, product engineers own everything end-to-end: talking to users, writing the spec, shipping the code, writing the docs — and the...
Is the Senior Product Engineer position at Langfuse remote?
Yes! The Senior Product Engineer position at Langfuse is a remote role, with team members based in Remote, EU. Apply through Clera to learn more about their remote work policies.
How do I apply for the Senior Product Engineer position at Langfuse?
You can apply for the Senior Product Engineer position at Langfuse directly through Clera. Click the "Apply Now" button above to start your application. Clera's AI-powered platform will help match your profile with this opportunity and guide you through the application process.