Langfuse (YC W23)

Langfuse is an open-source LLM engineering platform that provides tools for debugging, analyzing, and improving LLM applications. It's designed to help teams build production-grade LLM applications faster by offering a comprehensive suite of features including LLM tracing, prompt management, evaluation, and datasets. Langfuse is committed to being developer-first and offers a powerful yet simple API and SDKs for seamless integration with existing workflows.

Langfuse is headquartered in Berlin, Germany and is backed by a strong team of engineers and investors, including Lightspeed Venture Partners, General Catalyst, La Famiglia, and Y Combinator. Their commitment to open source is evident in their transparent development process, community engagement, and the availability of self-hosting options. They are focused on building a robust and secure platform that addresses the needs of developers building and deploying LLM applications.

Langfuse is currently based in Berlin and all roles are in-person, requiring either relocation or being already located in Berlin. While they don't mention remote work options, they do operate with a culture inspired by Reed Hastings' "No Rules Rules" philosophy, suggesting a flexible and potentially self-directed work environment. They also emphasize a fast-paced and agile work style with a focus on building a great developer experience.

Langfuse offers competitive salaries based on experience, with a range of €70K to €130K EUR for Product Engineers and €60K to €120K EUR for Developer Advocates. The company also offers equity options, with 0.25% to 0.75% for Product Engineers and 0.25% to 0.50% for Developer Advocates. Additionally, Langfuse provides health insurance and a flexible working environment.

Langfuse is building an open-source LLM engineering platform that helps developers build, debug, and monitor production-grade LLM applications faster. Their mission is to empower developers to build complex and robust LLM applications with a focus on transparency, collaboration, and developer-first principles. They believe that by providing comprehensive tracing, evaluation, prompt management, and a robust set of integrations, Langfuse can accelerate the adoption of LLMs in the real world.

Langfuse prioritizes a transparent and collaborative work environment, heavily influenced by their time at Y Combinator and Reed Hastings’ "No Rules Rules" philosophy. They value a fast-paced, results-oriented culture where engineers take ownership and make significant contributions, fostered by frequent communication and a focus on building great developer experiences.

Langfuse is committed to building a diverse and inclusive workplace, reflecting the open-source community they serve. They strive to create a welcoming and equitable environment for all, where everyone feels valued and respected. Their efforts include promoting a culture of collaboration, open communication, and inclusivity, actively seeking diverse talent, and actively engaging with underrepresented communities.