Product Engineer
Vor 3 Tagen
About LangfuseOpen Source LLM Engineering Platform that helps teams build useful AI applications via tracing, evaluation, and prompt management (mission, product)We have the 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 pullsWe raised money from world class investors (Y-Combinator, Lightspeed, General Catalyst) and are default alive by making more money than we spendWe're a small, engineering-heavy, and experienced team in Berlin and San Francisco (how we work)About the RoleIn Short: We're looking for an experienced product engineer to help us scale our platform as we grow.What you'll doDo whatever it takes to build new features for our users. For this you are not afraid to touch FE, BE, SDKs or DocsYou love to communicate with users on a call or in one of our hundreds of slack channelsYou will come up with a plan on how to build the next big feature at Langfuse and execute on itDoing supportWriting docsTech StackYou should be familiar with a majority of these but we trust that you can pick up a new language/framework quickly. See full stack hereLear about our architectureWhat we're looking forSomeone who is able to PM and project manage themselvesExperience building highly reliable, scaling infrastructureInterest in open source software and talking to usersHard worker who thrives in a small, accountable teamCS or quantitative degree preferredImpressive achievements (professional or otherwise)Bonus points: Former founderExperience in SDK designDX, ML/AI backgroundWhy Langfuse?Building for very sophisticated technical usersCompetitive salary & equity compensationStrong customer & revenue growthYou are still joining really earlyStrong in person engineering culture (Berlin-Mitte)Extreme autonomyPerformance and learning focused cultureEveryone on the team says: "best place I've ever worked at"2 short scheduled meetings per weekProcessWe can run this process to offer in less than 7 days.Fill out applicationWe screen your applicationJump on a intro call with our CTOTechnical Deep Dive interview Super Day ( half or full day in Berlin Office )Meet the other founders (short calls)Decision & OfferLinksProject you could have built: Infrastructure Evolution Blog PostOur codebase: GitHub RepositoryBen Kuhn on Impact, Agency and TasteWho we are & how we workWhat is a Product Engineer (PostHog)
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Product Engineer
vor 2 Wochen
Berlin, Berlin, Deutschland Tec Partners Limited Vollzeit 70.000 € - 130.000 € pro JahrJob Description Hiring: Product Engineer | Open-Source LLM DevTools | Berlin (Onsite) Berlin | €70k–€130k + equity (0.1–0.35%) | Early-stage AI | Full-stack ownershipI'm working with a Berlin-based, VC-backed startup that's building the leading open-source platform for LLM application observability and analytics. They're seeking a Founding Product...
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Product Engineer
Vor 3 Tagen
Berlin, Berlin, Deutschland Tec Partners Limited Vollzeit 60.000 € - 120.000 € pro JahrJob Description Hiring: Founding Engineer | AI Voice Tech | Berlin (Onsite)I'm hiring on behalf of a VC-backed AI startup in Berlin that's reinventing how businesses handle voice communication using AI-powered agents.They've already hit six-figure ARR, recently closed a multi-million euro round, and are now looking for a Founding Engineer to help shape the...
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Product Engineer
Vor 5 Tagen
Berlin, Berlin, Deutschland Flank Vollzeit 80.000 € - 120.000 € pro JahrFlank is the leading Agentic AI platform for in-house legal teams—built for a future where autonomous AI colleagues handle entire workflows.Companies like TravelPerk, QA, and Mural use Flank to automate contract negotiation, email triage, and security reviews. What used to take hours of manual work now happens automatically.We're building in an emerging...
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Product Engineer
vor 1 Woche
Berlin, Berlin, Deutschland Langdock Vollzeit 60.000 € - 120.000 € pro JahrAbout the RoleWe're seeking a highly skilled and proactive Full-Stack Product Engineer to join our team full-time and in person. This is a fantastic opportunity for someone eager to develop features end-to-end and make a substantial impact in a fast-paced, early-stage startup environment.In this role, you will build product features from conception to...
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Product Engineer
Vor 5 Tagen
Berlin, Berlin, Deutschland koppla GmbH Vollzeit 70.000 € - 85.000 €What we offerA company of co-owners through tax-optimized equity grants.A culture with a focus on transparency, respect, ownership, collaboration and the well-being of each team member on this exciting journey.An environment that values hard-work while still allowing work-life/family integration through 28 days PTO, flexible working hours and a hybrid...
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Product Engineer
vor 2 Wochen
Berlin, Berlin, Deutschland b6ef1e01-9f7c-4c3a-88a3-da4c6c461e83 Vollzeit 70.000 € - 100.000 € pro JahrWe are building a generational company that will be the operating system for tradespeople in Europe, starting with roofers in Germany.Roofers do not need more software. They need results: a system that aces everything from sales to measurements to finding new hires so they can focus on their craft. That is what handly does as a business-in-a-box startup.We...
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Product Engineer
vor 1 Woche
Berlin, Berlin, Deutschland handly Vollzeit 70.000 € - 100.000 € pro JahrWe are building a generational company that will be the operating system for tradespeople in Europe, starting with roofers in Germany.Roofers do not need more software. They need results: a system that aces everything from sales to measurements to finding new hires so they can focus on their craft. That is what handly does as a business-in-a-box startup.We...
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Product Engineer
vor 2 Wochen
Berlin, Berlin, Deutschland primehire Vollzeit 80.000 € - 150.000 € pro JahrProduct Engineer - AI company - Berlin - Series BWe're searching for Product Engineers to join an AI driven start-up, impacting the lives of 20+ million users.Own and build E2E features used by millionsFocused on moving fast, delivering real user value and business impactStrong engineering background with hands on experience in frontend/mobile frameworks or...
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AI Product Engineer
Vor 3 Tagen
Berlin, Berlin, Deutschland forgent Vollzeit 60.000 € - 120.000 € pro JahrIntro Forgent AI is on a mission to build AI products for better public procurement. We are looking for a talented Product Engineer to join our founding technical team in Berlin. You'll play a crucial role in shaping our product and technology and building reliable, impactful software for a domain where it truly matters. The role As a Product Engineer at...
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Lead Product Engineer
vor 2 Wochen
Berlin, Berlin, Deutschland hallo theo Vollzeit 95.000 € - 115.000 € pro JahrYour Mission As Lead Product Engineer at hallo theo, you design, build and ship scalable product solutions that power our platform. You own critical user journeys end-to-end – from early discovery with Product and Design, through technical design and implementation, all the way to rollout, quality and iteration based on data and customer feedback. You act...