Machine Learning Engineer Job at Alexander Chapman, Sunnyvale, CA

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  • Alexander Chapman
  • Sunnyvale, CA

Job Description

🚀 I’m excited to share a Founding Engineer opportunity at a stealth early-stage startup building critical AI infrastructure.

They're tackling a huge, underserved space: automating browser-based workflows — an area current AI systems still struggle with. Rather than wrapping existing models, they’re designing first-principles core infrastructure to enable the next generation of browser agents: hyper-realistic web simulations, annotation frameworks, RL training environments, and reliable benchmarking tools resistant to web drift, IP bans, and more.

The founding team comes from Scale AI, Meta , and other top tech backgrounds. They’re looking for an exceptional early-career engineer (0–2 YOE) with strong Python/TypeScript skills and real ML experience (training models, building infra, running experiments).

🛠️ This isn’t prompt-engineering or fine-tuning — you’d be solving deep ML/infra problems daily, helping to build a "browser agent gym," and shipping real systems others will depend on.

Why join?

  • Build real ML infrastructure with serious technical complexity
  • Early-stage equity + competitive salary
  • Shape the future of browser automation and AI agents

Bonus points if you have experience with RL agents , Puppeteer/Playwright , or if you’re ready to go much deeper than just fine-tuning.

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