TL;DR
Langfuse, an open-source LLM engineering platform and YC W23 alum, is expanding its team in Berlin to build backend systems, product, and developer-facing work. The company cites strong adoption metrics and lists top-tier backers and enterprise customers as part of its recruiting pitch.
What happened
Langfuse has posted a hiring push in Berlin as it looks to broaden the team responsible for its LLM engineering tooling. The company frames its work around enabling continuous monitoring and evaluation workflows needed to move large language model applications into production. Leadership says recent traction makes this a timely moment to add engineers and product staff focused on backend infrastructure, product development, and developer communications. Langfuse highlights a publicly visible handbook that documents company principles, hiring processes, and how the team works. The careers page also points to numerous public resources — code repositories, documentation, walkthroughs and metric dashboards — intended to help prospective hires assess fit. Langfuse identifies several enterprise users and notes venture support from named investors while inviting applicants who enjoy tackling complex technical problems and building polished developer experiences.
Why it matters
- Brings engineering resources to a toolset aimed at operationalizing LLMs for production environments.
- Open-source orientation can accelerate adoption among developers and enterprise teams seeking transparent tooling.
- Strong adoption indicators and enterprise customers suggest the platform is being used beyond early experimentation.
- Hiring in Berlin signals continued geographic expansion and investment in core product and infrastructure capabilities.
Key facts
- Location: hiring push announced for Berlin, Germany.
- Company status: YC W23 alumnus (YC W23 referenced on company materials).
- Product focus: open-source LLM engineering platform centered on monitoring and evaluation workflows.
- Backers: Lightspeed, General Catalyst, Y Combinator and unnamed angels are listed.
- Public adoption metrics cited: 19,719 GitHub stars, over 23.1M SDK installs per month, and 6M+ Docker pulls.
- Enterprise footprint: says it is used by 19 of the Fortune 50 and 63 of the Fortune 500 (as quoted on the careers page).
- Customers named in materials include Samsara, Twilio, Khan Academy, and Rocket Money.
- Company maintains a public handbook detailing principles, hiring, pay and perks, and operational processes.
- Careers page links to open roles and various public resources such as GitHub repos, docs, and product walkthroughs.
- Careers content last updated on December 6, 2025 (as shown on the page).
What to watch next
- Open roles listed on the Langfuse careers page and any role-specific details they publish.
- Product roadmap updates and public repo activity to see where new hires will focus.
- not confirmed in the source: whether the Berlin hiring will establish a permanent local office or be remote-first.
- not confirmed in the source: timelines or headcount targets for the Berlin expansion.
Quick glossary
- Large Language Model (LLM): A type of AI model trained on extensive text data to understand and generate human-like language.
- Open source: Software released with a license that permits users to view, modify, and distribute the source code.
- SDK: Software Development Kit — a collection of tools, libraries, and documentation that helps developers build applications for a platform.
- Docker: A platform that packages applications and their dependencies into containers to run consistently across environments.
- Y Combinator (YC): A startup accelerator that provides seed funding, advice and networking to early-stage companies.
Reader FAQ
Where is Langfuse hiring?
The company has announced hiring activity in Berlin, Germany.
What kinds of roles is Langfuse recruiting for?
The careers page says it seeks people to work on backend systems, product, and developer communications, but specific job titles and counts are not listed in the source.
Is Langfuse open source?
Yes — the platform is presented as open source and the company links to public GitHub repositories and related resources.
Who backs Langfuse?
The page names Lightspeed, General Catalyst, Y Combinator and unspecified angel investors as backers.
What is the evidence of adoption?
The careers materials cite public metrics including tens of thousands of GitHub stars, millions of SDK installs per month, and millions of Docker pulls, and claim usage by organizations in the Fortune 50/500.
Building Langfuse Join the team building the leading open-source LLM engineering platform View Open Positions → While LLMs improve a lot, we don’t see enough applications in production. Building these…
Sources
- Langfuse (YC W23) Is Hiring in Berlin, Germany
- Langfuse: Open source LLM engineering platform
- Langfuse
- Langfuse (YC W23) hiring for Platform Engineer / SRE
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