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Langfuse · 2 months ago

Technical Customer Success ( San Francisco )

San Francisco, CA, US

Full-time

Onsite

New Grad, Entry Level

$100K/yr - $160K/yr

Langfuse is building open-source observability and product analytics for LLM applications. They are seeking a Customer Success Engineer to ensure successful onboarding, adoption, and long-term growth for users and customers, while working closely with engineering and GTM teams.

Artificial Intelligence (AI)Developer ToolsSaaS

Responsibilities

Help new users and customers onboard and succeed with Langfuse

Provide hands-on guidance and best practices for LLM observability and evaluation

Serve as the main point of contact for technical and operational questions

Track product adoption and proactively reach out to help customers deepen usage

Identify upsell opportunities and contribute to retention and growth

Translate customer needs into actionable product feedback

Build and maintain feedback loops between users, success, and product teams

Help shape documentation and learning resources to reduce friction

Build and maintain workflows for tracking adoption, success metrics, and customer health

Document playbooks, best practices, and internal tooling for the success function

Partner with sales and product to align priorities across the user lifecycle

Qualification

Customer success experienceTechnical aptitudeSaaS experienceAPIs understandingLLM/AI tools experienceEntrepreneurial mindsetOpen-source familiarityCommunicationProblem-solving skillsCross-functional collaboration

Required

Experience in customer success, solutions engineering, or technical account management at a SaaS/devtool company

Strong technical aptitude — able to understand APIs, logs, and developer workflows

Excellent communication and problem-solving skills

Comfortable working cross-functionally in a fast-moving startup

Willingness to work in-person ~4 days/week

Preferred

You've used Langfuse (sign up for a free account here)

Familiarity with open-source or developer-focused products

Experience supporting or building with LLM/AI tools

Entrepreneurial mindset — you enjoy building new processes and solving ambiguous problems

Benefits

Competitive salary & equity.

Company

Langfuse

Open source observability & analytics for LLM apps

Founded in 2022

Berlin, Berlin, DEU

2-10 employees

https://langfuse.com

Funding

Current Stage

Early Stage

Total Funding

$4M

2026-01-16Acquired

2023-11-07Seed· $4M

Leadership Team

Marc Klingen

Co-Founder & CEO

Clemens Rawert

Co-Founder

Recent News

Verdict

ClickHouse secures $400m in Series D led by Dragoneer

2026-01-20

SiliconANGLE

Database maker ClickHouse raises $400M, acquires AI observability startup Langfuse

2026-01-17

Pulse 2.0

ClickHouse: $400 Million Series D Raised, Langfuse Acquisition, And Native Postgres Service Debuted

2026-01-17

Company data provided by crunchbase