Technical Lead, Frontend
Confirmed on the employer's own hiring board on Oct 20, 2026. First seen by Alion on Sep 2, 2025. Onyx scores B on the Alion truth index.
Your impact
Onyx is a popular open source project with hundreds of thousands of users. The project has over 13K stars and over 3K community members across Slack and Discord (these stats may already be out of date when you read this). You’ll have the opportunity to build in the open and your work may be used by millions of people in the future.
About the role
As an early hire, you'll play a pivotal role in shaping the core product. Help us become the biggest “GenAI for work” application in the world!
You’ll be:
Doing everything frontend for the default open-source chat interface, enterprise search platform, and agent builder. Some specific features:
Beautiful core search and chat experience (animations, speed, etc.). Think building the UI/UX layer for Perplexity AND ChatGPT in one.
Huge feature set: workspace search, internet search, code interpreter, artifacts, deep research, and so much more
Collaborating closely with the design team + founders
Setting frontend priorities and best practices
Building an exceptional design / frontend engineering culture
Fostering an open-source community; guiding contributors on adding to the frontend
This is an in-person role based in San Francisco, CA.
You’ll be successful if you have…
4+ years of frontend engineering experience building complex, user-facing applications
Have an incredible bar for yourself and for others. You want your work to be exceptional, and accept nothing less.
In-depth experience with JavaScript, TypeScript, React, NextJS and other modern frontend technologies
Excellent communication skills and ability to collaborate with cross-functional teams
Strong product/design intuition.
⭐ Bonus points
Familiar with Python, Postgres
Degree in Computer Science or related technical field
Previous founder or early engineer at seed/series-A startup
Why you should join us
You like working with brilliant (yet humble), thoughtful, and collaborative people
Great benefits including fully covered health/dental/vision and transportation reimbursement
Free meals - We have our Mix’t loyalists and a rebel faction of unhealthy eaters
Stocked kitchen with drinks, snacks, matcha and an espresso machine
Monthly company outings (bike rides to Mt. Tamalpais, escape rooms, etc.)
We enjoy friendly competition - we built an internal ELO system to find the best ping pong players on the team
Exceptional compensation packages for exceptional people