Senior Product Engineer: End-to-End Open Source Features

Showcify; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Flexible work environment

Healthcare

Equity in the company

Time off

USD$500 Home office setup

Global Gatherings

Job summary

Langfuse is hiring product engineers to own features end-to-end, from user research and specs to shipping and docs. You will work across the full stack—React frontend, Next.js backend, ClickHouse analytics, Python/TypeScript SDKs—and engage directly with users to understand their problems.

You will design and ship features for a rapidly growing open-source platform that is MIT-licensed, with a strong community and a track record on GitHub.

Qualifications

• Experience building features or entire products end-to-end.
• Experience shipping user-facing products, ideally with TypeScript/React and data-intensive backends.
• Ability to manage projects and ship with conviction about what to build.
• Care about API design, UI details, and clear documentation.
• Interest in open source and talking to developers about their problems.
• Thrives in a small, accountable team.
• CS or quantitative degree preferred.

Responsibilities

• Own features end-to-end from user talks to shipping and docs.
• Work across the full stack: frontend, backend, analytics, SDKs.
• Talk to users constantly via calls and community channels.
• Write public documentation for the features you own.
• Ship publicly during Launch Weeks and present to the community.

Skills

End-to-end feature development

User-facing products

Project management

API design

UI details

Documentation

Open source enthusiasm

Education

CS or quantitative degree

Tools

TypeScript

React

Next.js

ClickHouse

Python

Terraform

Job description

Langfuse is hiring product engineers to own features end-to-end, from user research and specs to shipping and docs. You will work across the full stack—React frontend, Next.js backend, ClickHouse analytics, Python/TypeScript SDKs—and engage directly with users to understand their problems.

You will design and ship features for a rapidly growing open-source platform that is MIT-licensed, with a strong community and a track record on GitHub.