DevRel Engineer
LangfuseEurope; San Francisco; London; Munich; Paris; ZurichPosted 21 February 2026
Tech Stack
Job Description
About LangfuseOpen Source LLM Engineering Platform that helps teams build useful AI applications via tracing, evaluation, and prompt management (mission, product). We are now part of ClickHouse.We're building the "Datadog" of this category; model capabilities continue to improve, but building useful applications is really hard, both in startups and enterprises.Largest open source solution in this category: trusted by 19 of the Fortune 50, >2k customers, >26M monthly SDK downloads, >6M Docker pulls.We joined ClickHouse in January 2026 because LLM observability is fundamentally a data problem and Langfuse already ran on ClickHouse. Together we can move faster on product while staying true to open source and self-hosting, and join forces on GTM and sales to accelerate revenue.Previously backed by Y Combinator, Lightspeed, and General Catalyst.We're a small, engineering-heavy, and experienced team in Berlin and San Francisco. We are also hiring for engineering in EU timezones and expect one week per month in our Berlin office (how we work).TL;DRWe are hiring an Engineer who wants to create content, documentation and engages with our global user base. You are powering our developer relations expanding Langfuse's thought leadership in the LLM ops space. About LangfuseOpen Source LLM Engineering Platform, help teams build useful AI applications via tracing, evaluation, and prompt management (mission, product)Massive opportunity, chance to build the "Datadog" of this category; model capabilities continue to improve but building useful applications is really hard, both in startups and enterprisesLargest open source solution in this category: >2k customers, >14M monthly SDK downloads, >6M docker pullsInvestors: $4M Seed by Y Combinator, Lightspeed, and General CatalystWe're a small, engineering-heavy, focused team in Berlin and San Francisco (how we work)What you'll doMake our documentation the best out thereBlog & Social posts to define how everyone should think about LLM EngineeringWrite Cookbooks / Code examples that provide real value for usersProduce Videos and MemesBuild applications that help us grow in unconventional waysDeeply engage with OSS communityWhat we're looking forMustYou are an Engineer who wants to educate through contentTechnical background (Engineering or Data Science)You have taste in good contentExtrasYou already create contentYou are deep in AI engineeringYou are equipped to redefine what DevRel means in the age of LLMsYou have original opinions that experienced Devs valueYou contribute to OSS projectsSoftware Engineering work experience is a big plusWhy Langfuse?Building for very sophisticated technical usersCompetitive salary & equity compensationStrong customer & revenue growthYou are joining really earlyExtreme autonomyPerformance and learning focused cultureEveryone on the team says: "best place I've ever worked at"2 short scheduled meetings per weekOur ProcessWe can run this process in less than 7 days.Fill out applicationWe screen your applicationFirst Call: Quick intro & chat about logisticsSecond Call: Founder Deepdive (40mins), remoteThird Call: Technical Deep Dive interview (60min)Super Day ( half or full day in Office, remote in some cases)Meet the other founders (short calls)Decision & OfferLinksAll repos: github.com/langfuseCompany handbook: langfuse.com/handbookTeam: https://langfuse.com/handbook/chapters/teamHow we hire: langfuse.com/handbook/how-we-hireBlog: langfuse.com/blogSome people who’s DevRel work we like:Lee Robinson - built DevRel at Vercel now at cursorSwyx - running latent space pod and writes about DevRelLars Grammel - building and writing about AI SDKMax Tkacz - who built the n8n community & content machineIshan of Exa who shipped twitterwarpped.exaAymeric & prev. David creating content & courses at hugginfaceProcessWe can run the full process to your offer letter in less than 7 days (hiring process).Tech StackWe run a TypeScript monorepo: Next.js on the frontend, Express workers fo ... (truncated, view full listing at source)
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