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LinkedIndavid@raydar.xyz

Machine Learning Engineer

Early-stage software company

  • LocationSan Francisco, California
  • TypeFull-time
  • Posted6 October 2026

The role, as published

About the company

Our client is an early-stage software company.

The role

Raydar is recruiting for this role on behalf of our client. Serve as the first engineering hire, building reinforcement learning environments and production AI agents. Work side by side with the company's leadership to shape technical priorities, and step into running the engineering function as headcount grows.

What you'll do

  • Build reinforcement learning environments from proprietary datasets.
  • Develop and deploy AI agents for business customers.
  • Help company leadership decide technical direction and plan what to build next.
  • Take on leadership of the engineering team as it expands.
  • Deliver quickly without lowering quality standards in a startup setting.

What we're looking for

  • 3 to 7 years of engineering experience with strong reinforcement learning fundamentals.
  • Prior experience building reinforcement learning environments, at an RL-focused company or a data company with hands-on RL exposure.
  • Hands-on experience building and running AI agents in production.
  • Daily use of AI-assisted coding tools as part of production work.
  • Living in the Bay Area or ready to move there, with a full in-office schedule.

Bonus points

  • Prior experience at a leading human data company.
  • Full-stack engineering background, for example TypeScript and AWS.
  • Mobile development experience with iOS, Swift or React Native.
  • Startup experience with a demonstrated record of shipping quickly.

Location and work model

  • San Francisco, CA, United States
  • On-site
  • Full-time

Compensation, as the posting describes it

  • Performance bonus

Ready for Machine Learning Engineer?

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Applying here sends your application to Raydar. If you also find this role on the company's own careers page, talk to us before you apply there. A direct application can mean we cannot represent you for that role.