Startups · AI

Founding Engineer, Infra & Agent Systems

Cua · San Francisco, CA, US · On-site

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About Cua

Give every agent a cloud desktop. Backed by Y Combinator.

About the role

Cua is building the infrastructure that enables general-purpose AI agents to safely and scalably use real computers and applications. We're a small team backed by Y Combinator and top-tier investors, and our open-source tools are already used by thousands of developers. As a Founding Engineer , you’ll help turn research prototypes into production-ready infrastructure - powering everything from secure agent runtimes to cross-cloud container orchestration.

What they're looking for

  • 2+ years building and maintaining production infrastructure systems
  • Proficiency in one or more of: Python , Go , TypeScript , or Rust
  • Experience with backend system design, containers, and cloud environments
  • Strong interest in developer tools, AI infrastructure, or distributed systems
  • Comfortable operating in a fast-moving, ambiguous, startup environment
More about this role

Cua is building the infrastructure that enables general-purpose AI agents to safely and scalably use real computers and applications.

We're a small team backed by Y Combinator and top-tier investors, and our open-source tools are already used by thousands of developers. As a Founding Engineer , you’ll help turn research prototypes into production-ready infrastructure - powering everything from secure agent runtimes to cross-cloud container orchestration.

We’re looking for someone who brings deep technical ability, strong product instincts, and an eagerness to operate across layers - from OS-level virtualization to developer-facing APIs. You’ll work closely with the founding team on infrastructure design, developer tools, and open-source community building.

Your contributions will shape how autonomous agents interact with real computers at scale - across macOS, Windows and Linux - and how developers deploy and trust them in production environments.

Cua is for builders who care about reproducibility, system safety, and the developer experience of working with AI. If that sounds like you, we’d love to talk.

  • Design and scale infrastructure to run real AI agents on isolated macOS and...

Read the full posting on Cua's site ↗

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