Software Engineer - Compute and Isolation

Highlights

• Own sandbox start, stop, snapshot, fork, and resume for AI agents at scale.
• Build the computers AI agents run on, from kernels down to datacenter design.
• Ship fast on a small team owning multi-tenant isolation as security boundary.

What they offer

• 100% coverage of medical, dental, and vision insurance for employee and dependents
• Flexible PTO policy including company wide Winter Break
• Paid parental leave
• Fertility and family-building stipend through Carrot (U.S. only)
• Company-facilitated 401(k)

Ideal candidate

Low-level systems builder who loves owning hard infrastructure end to end on a small, fast-moving team and cares about performance and isolation down to the hardware for AI agents.

Requirements

• Hands-on experience with KVM, plus Firecracker, Cloud Hypervisor, or QEMU
• Deep understanding of Linux internals: namespaces, cgroups, memory management, and the boot path
• Experience building cloud infrastructure as the provider (multi-tenant compute that customers run on), not only running workloads on a cloud provider
• Experience building multi-tenant infrastructure where isolation is a security boundary
• Strong systems programming background in Rust and/or Go; C/C++ also welcome
• Experience debugging performance and correctness problems across userspace and kernel boundaries
• You move fast and like owning a problem end to end on a small team