Software Engineer, Sandboxing

Highlights

• Build isolated execution environments where models run code and use tools.
• Own sandboxing platform end-to-end supporting thousands of concurrent executions.
• Ensure fast, secure execution for researcher training and external Tinker users.

What they offer

• Generous health, dental, and vision benefits
• Unlimited PTO
• Paid parental leave
• Relocation support as needed

Ideal candidate

Systems-minded engineer who thrives owning critical infrastructure end-to-end and collaborating across research and product. Cares deeply about building fast, secure, dependable execution for AI agents that take action in the world.

Requirements

• Bachelor's degree or equivalent experience in computer science, engineering, or similar
• Proficiency in at least one backend language (we use Python or Rust)
• Experience building or operating isolation or virtualization technology, such as containers, microVMs (e.g. Firecracker, Cloud Hypervisor), or sandboxed runtimes (e.g. gVisor, Kata Containers)
• Solid grounding in Linux internals relevant to isolation: namespaces, cgroups, seccomp, capabilities, and networking
• Comfort operating across the stack and owning projects end-to-end
• Thrive in a highly collaborative environment involving many, different cross-functional partners and subject matter experts