Senior Product Engineer - End-to-End Open-Source LLM Tools

United States Digital Space LLC; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Flexible work environment

Healthcare contributions

Stock options

Time off

Home office stipend

Global gatherings

Job summary

Langfuse is building end-to-end product features for a global developer audience. You will own the product thinking, from user problem understanding to shipping the solution, with exposure to cutting-edge LLM applications.

You will work across the stack (React, Next.js, Python, Terraform, SDKs) and talk to users to shape the product. The role emphasizes open source engagement, documentation, and launching new features during Launch Weeks.

Qualifications

• Experience shipping user-facing products end-to-end.
• Strong TS/React experience.
• Exposure to data-intensive backends.
• CS or quantitative degree preferred.
• Contributions to open source a plus.

Responsibilities

• Own features end-to-end from concept to shipping.
• Talk to users, gather feedback, and write specs.
• Ship code, docs, and changelog posts.
• Collaborate across frontend, backend, docs, and Terraform modules.
• Engage with the developer community and open source users.

Skills

TypeScript/React

End-to-end shipping

Data-intensive backends

Open source enthusiasm

User-facing products

Education

CS or quantitative degree

Tools

React

Next.js

Python

Terraform

TypeScript SDKs

Job description

Langfuse is building end-to-end product features for a global developer audience. You will own the product thinking, from user problem understanding to shipping the solution, with exposure to cutting-edge LLM applications.

You will work across the stack (React, Next.js, Python, Terraform, SDKs) and talk to users to shape the product. The role emphasizes open source engagement, documentation, and launching new features during Launch Weeks.