Why SDK Engineering at Langfuse Your work will have an outsized impact. When you ship a new integration or improve SDK performance, thousands of developers benefit the same day — and they'll tell you about it in GitHub issues, on Twitter, and in our community channels. Everything you build is open source (MIT-licensed) and immediately visible. The users you serve are some of the best and most ambitious software engineers in the world and that leverage Langfuse to improve their applications. We maintain SDKs in Python and TypeScript both built on OpenTelemetry. You'll be responsible for their reliability, performance, and developer experience. These SDKs run inside our users' production systems, which means they must never fail, must have minimal impact on CPU and memory, and must work flawlessly across every environment — from serverless functions to long-running agent loops. Developer experience is a core differentiator for Langfuse and you'll own every detail of it. When we shipped the Python SDK v3 and TypeScript SDK v4 , both were full rewrites on OpenTelemetry — that's the kind of thoughtful, high-impact SDK work you'll lead. OpenAI SDK, Vercel AI SDK, AI SDK, LangChain, LlamaIndex, Pydantic AI, OpenAI Agents, CrewAI, Amazon Bedrock AgentCore, LiveKit, and many more. When a new framework gains traction, you'll be among the first to instrument it. This also extends our language support to Java, Go, and any language with an OpenTelemetry SDK. Writing public documentation : you'll own the SDK docs, integration guides, and migration paths. When you ship a new SDK version or integration, the docs ship with it.



Strong engineer who gets excited about developer experience, API design, and writing code that runs reliably in other people's production systems Experience building or maintaining SDKs, client libraries, or developer tools — ideally in Python and/or TypeScript Deep understanding of performance: you know how to profile, benchmark, and minimize CPU/memory overhead in hot paths Someone who can manage projects themselves — you know how to develop strong conviction about what to build and how to ship it Interest in open source software and genuine excitement about talking to developers about their integration challenges SDK Overview — architecture and design of our Python and TypeScript SDKs Project you could have built: TypeScript SDK v4 (GA) Project you could have built: Python SDK v3 (GA) GitHub Repository Flexible work environment
- ClickHouse is a globally distributed company and remote-friendly. A USD$500 Home office setup if you’re a remote employee. Integral Gatherings – We believe in the power of in-person connection and offer opportunities to engage with colleagues at company-wide offsites. Culture
- We All Shape It Check out our blog posts or follow us on LinkedIn to find out more about what’s happening at ClickHouse. ClickHouse provides equal employment opportunities to all employees and applicants and prohibits discrimination and harassment of any type based on factors such as race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.

📌 Senior Software Engineer (España)
🏢 ClickHouse
📍 España