Founding Engineer, Infra

Cua is building the infrastructure that lets general AI agents safely and scalably use Computers and Apps.

With 8.9k+ GitHub stars in just 4 months and backing from Y Combinator, we’re providing:

• An open-source framework for building and evaluating general-purpose AI agents
• A cloud container platform for sandboxed, scalable agent execution environments
• A blueprint for what production-grade general agent systems should look like - backed by research

We're looking for a Founding Engineer to help us push this vision forward - turning cutting-edge research prototypes into real, deployable systems.

If you’re obsessed with developer tools, infrastructure, and making AI agents go from toy demos to robust, real-world tools - we want to talk.

🛠️ What You'll Work On

• Day 1 Impact - Ship infrastructure powering real agent workloads used by early customers and open-source users.
• Agent Infra Core
  • OS-level sandboxing and container orchestration across cloud providers
  • Scalable infrastructure for deploying isolated Linux/macOS environments for agents
  • Tools that make agent deployment as simple as an API call
• Beyond Engineering
  • Open Source Leadership - Shape our growing GitHub community and help define the standard for AI agent systems
  • Product Strategy - Work directly with the founders on roadmap and direction
  • Dev Advocacy - Help grow the ecosystem with blog posts, community engagement, and in-person events in SF

🎯 You’re a Fit If You…

• Live and breathe systems - You know how to scale infra, secure containers, and debug hairy cloud issues.
• Build for abstraction - You’re excited about designing simple APIs over complex infrastructure.
• Care about quality - You understand why reproducibility, isolation, and reliability are core to agent workloads.
• Think long-term - You’re not here to build another wrapper - you’re here to define a category.

🎓 What You Bring

• BS in CS (or equivalent experience) + 2+ years shipping real systems in Python, Go, TypeScript, or Rust
• Infra experience: building secure, scalable, performant backend systems
• Familiarity with LLM-generated code and tools (e.g. Copilot, Cursor) - and how to work with or around them
• Ability to navigate ambiguity and move fast without breaking the wrong things

Bonus points for:

• Deep experience with Docker, KVM, or OS virtualization
• Multi-cloud experience (GCP, AWS, Azure)
• PostgreSQL optimization war stories
• Meaningful open-source contributions

💼 What We Offer

• Stage - Backed by YC and top investors, building the founding team
• Location - SF-based, hybrid preferred, remote-friendly
• Comp - $100K–$150K base + 0.5% equity
• Timing - Join early enough to shape product, culture, and architecture from the ground up
• Impact - Thousands of developers already use Cua; you’ll help define how agents run in production

🧪 How to Apply

• Your GitHub (required)
• A short note about the hardest infra problem you’ve solved
• Bonus: Fix an issue or build something with Cua - our open-source project is active and ready

🌐 Learn more: trycua.com

Interested persons may send their application with authorization in accordance with legislative decree 196/2003. The search respects legislative decree 198/2006 and is open to candidates of any orientation or expression of gender, sexual orientation, age, ethnicity, and religious belief. This advertisement is designed with diversity and inclusiveness in mind.