Langfuse - Senior Product Engineer

Why Product Engineering at Langfuse

Everything you build is open source (MIT-licensed) and immediately visible. Langfuse has 21,900+ GitHub stars and SDKs downloaded 23M+ times per month. Product engineers at Langfuse deliver new features end-to-end to users, owning the product thinking from understanding the user problem to deciding what to build to shipping the solution.

You Will Grow at Langfuse By

• Owning features end-to-end: from talking to users, to writing the spec, to shipping the code and docs, to writing the changelog post
• Working across the full stack: React frontend, Next.js backend, ClickHouse analytics, Python and TypeScript SDKs, public docs, Terraform modules
• Talking to users constantly: jumping on calls, responding in community channels, routing support requests
• Writing public documentation about the features you own — at Langfuse, docs are product
• Shipping publicly during Launch Weeks, presenting features to the community

What We're Looking For

• Someone who has built features or entire products from scratch end-to-end
• Experience building and shipping user-facing products, ideally in TypeScript/React and with exposure to data-intensive backends
• Someone who can manage projects themselves, with strong conviction about what to build and how to ship it
• Taste for great developer experience: API design, UI details, and clear documentation

Bonus points: Experience with ClickHouse, analytics databases, or complex data visualizations; former founder or early startup experience; ML/AI background.

Perks

Flexible work environment - ClickHouse is a globally distributed company and remote-friendly, operating in over 25 countries. Healthcare employer contributions, equity in the company, flexible time off, a USD$500 home office setup for remote employees, and Global Gatherings for in-person connection at company-wide offsites.

Compensation

€90K – €160K, offers equity.