Langfuse is building open-source observability and product analytics for LLM applications. We help engineers and companies understand how customers use their LLM applications and how they can improve on them. Have a look at our website and especially technical docs to learn more.

GTM Engineer / Technical Sales at Langfuse

TLDR; Langfuse is building open source dev tooling for LLM apps based on observability/tracing. We have significant traction (we’re default alive), growing fast, and are looking for a technical profiles to build out our Go To Market functions in-person either in San Francisco or Berlin, Germany.

Background

Langfuse is the open-source LLM engineering platform , helping engineers understand user interactions with LLM applications and improve them. We work with great customers like Twilio, SumUp, and KhanAcademy and have raised a seed round from Y Combinator, Lightspeed, and General Catalyst. Tens of thousands of engineers rely on Langfuse - learn more about us here.

Your Role

As an early GTM hire, you’ll shape Langfuse’s commercial engine end-to-end:

Technical Sales in an inbound-led motion:

• Help customers adopt and understand Langfuse for their use cases.
• Own the full sales cycle: lead prioritization, product-led lead generation, pipeline management, technical POCs, negotiations, and closing deals.
• Develop customer success strategies to ensure retention, upsells, and product adoption.
• Build feedback loops between sales, support and product development.

Process & Systems

• Design and implement CRM workflows, sales pipelines, and documentation (public sales materials, contracts, order forms).
• Experiment with pricing, packaging, and sales strategies for both sales-led and product-led motions.
• Maintain a rigorous system for tracking leads, engagement, and outcomes.

Technical & Commercial Insight

• Understand Langfuse’s architecture and use cases to articulate our value proposition effectively.
• Translate customer requirements (technical, compliance, business) into actionable product feedback.
• Collaborate with product teams to align the commercial roadmap with customer needs.

Requirements

• Hands-on experience in technical sales or customer success at a SaaS/devtool startup.
• Proficiency with CRM tools (e.g., HubSpot, Salesforce) and sales automation.
• Strong technical aptitude; familiarity with LLM/observability tools is a plus.
• Willingness to work in-person ~4 days/week.

Bonus Points

• You’ve used Langfuse (sign up for a free account here) and understand our docs.
• Experience in selling in open-source or developer-focused products.
• Entrepreneurial mindset with a track record of building processes from scratch.
• Experience in navigating enterprise POCs with technical leadership as key decision makers.

Why Langfuse?

• Selling to sophisticated technical users
• Competitive salary & equity compensation
• Strong customer & revenue growth
• You are joining really early
• Extreme autonomy
• Performance and learning focused culture
• Everyone on the team says: "best place I've ever worked at"
• 2 short scheduled meetings per week

Team & Culture

You’ll join our early core team, working closely with the founders Clemens (COO, sales) and Marc (CEO, product/marketing). Clemens is based in SF and Marc in Berlin, Germany. We prioritize in-office collaboration and the role can be based out of either office.

Learn more about Langfuse through our Handbook

Further Links :

• Ben Kuhn on Impact, Agency and Taste
• How Posthog does sales
• Clay: The Rise of the GTM Engineer

https://github.com/langfuse/langfuse/

Stack: Frontend and Backend in Typescript (T3 Stack including NextJs, Tailwind, Prisma, tRPC), Postgres, Client facing SDKs in Python and Typescript