Software Engineer, Sandboxing

Highlights

• Build sandboxing platform powering every research experiment and product action.
• Design safe execution for untrusted model-generated code at massive scale.
• Support thousands of concurrent executions for researchers and Tinker users.

What they offer

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

Ideal candidate

Systems-minded builder who owns infrastructure end-to-end and thrives collaborating across research and product. You care about making powerful AI action safe, fast, and dependable.

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 or sandboxed runtimes
• 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 cross-functional partners
• Experience securing systems that execute untrusted or adversarial code
• Familiarity with running large-scale, multi-tenant infrastructure on Kubernetes or similar
• Experience with performance-sensitive systems programming and reducing cold-start latency
• Interest in how AI agents use tools and code execution