Langfuse

Own and evolve Langfuse’s high-impact Python and TypeScript SDKs, shaping developer experience for millions of monthly downloads. You’ll build reliable, performant integrations for the rapidly evolving LLM ecosystem while contributing to open-source tooling and documentation.

Own and scale the cloud infrastructure powering Langfuse’s production and self-hosted deployments. You’ll operate AWS and ClickHouse Cloud, build observability and automation, and ensure reliable performance as the platform grows.

Own user-facing features end to end at Langfuse, an open-source LLM engineering platform that helps developers build better AI applications. This senior product engineering role spans product discovery, full-stack implementation, documentation, and public launches.

Build and scale the backend and data infrastructure behind Langfuse’s open-source LLM engineering platform, processing terabytes of tracing data daily. You’ll own ingestion pipelines, optimize ClickHouse, and make the product reliable across cloud and self-hosted deployments.