Founding Engineer
Hub is one of the fastest-growing data companies, providing real-world training data to the largest AI and robotics companies. Based in San Francisco and backed by Y Combinator and top VCs, its mission is to advance embodied AGI through real-world data and research.
Responsibilities
As a founding engineer you own some of the most critical systems in the company.
- Multiple platforms with 150K+ users collecting data: B2C, B2B, mobile app, internal.
- Anti-fraud and automated QA systems. You own the quality of what we deliver every day.
- Heavy backend, keeping architecture and ops efficient as we scale to 1M+ users.
- Payout systems moving daily high volumes of money across 100+ countries.
- Live production serving multiple top 5 AI companies, hard deadlines and specs.
Candidate profile
The JD additionally targets top French engineering schools and 1–5 years of experience. More experience is welcome when the track record justifies it. We look for outliers with outstanding achievements and grit.
- Fluent in both French and English, spoken and written.
- Exceptional individual achievement: elite rankings at competitions or concours, hackathons won, system you hacked, projects at real scale or revenue.
- Evidence of active programming, real GitHub contributions, open-source participation and independently built projects.
- You treat agentic engineering as a craft. You research the field daily and always run a SOTA customized harness.
- We're looking for someone ready to commit fully to Hub's scale-up phase, with strong ownership, sustained focus, and the availability to meet clearly agreed working hours and collaboration needs.
- **Bonus: **experience developing mobile apps for iOS or Android.
Tools and working stack
Python, FastAPI, Postgres, React, Docker, AWS and S3, versioned REST APIs.
- Mobile: React Native and Expo, one codebase across iOS and Android, ARKit and ARCore under it for egocentric video capture. RGB+IMU sync, MCAP out.
- Multimodal pipelines at petabyte scale: ingestion, VLM QA and labeling, fraud detection, stereo depth and hand reconstruction, delivery in MCAP and LeRobot.
- We build our own custom platforms, not assembled SaaS: contributor app, commercial platform, mobile app, internal, payouts.
Offer stated in the JD
- $80,000 to $100,000 yearly salary, stock options between 0.25% and 0.5%.
- Direct work with the founders. Direct work with top AI labs.
Application evidence requested
Send us a short application, in your own words. We want to hear the thing you've done that you're the most proud of, your professional handles (GitHub, links, etc), and the story behind your achievements.
Applications go through Standout, who introduce you to the team.