165K–330K USD / year
Software Engineer, Compute and Isolation
DevOpsHybrid — San Francisco, California
Published on 2026-10-26
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About this role
Build and operate the microVM infrastructure that powers isolated sandboxes for AI agents. Own VM lifecycle and performance, from kernel and host tuning to secure multi-tenant isolation, on bare-metal servers.
About the company
Baseten is an inference cloud that helps companies run and scale AI models in production with flexible infrastructure and developer tooling.
The team
Agent Infra team, within EPD.
Stack
KVMFirecrackerCloud HypervisorQEMULinuxRustGoC/C++
What you'll do
- Own sandbox microVM start, stop, suspend, resume, snapshot, and fork.
- Build and tune custom guest kernels and host CPU and memory configurations.
- Improve sandbox density and startup and resume performance.
- Manage sandbox identity, storage attachments, and secure virtual networking devices.
- Design multi-tenant isolation and debug issues across userspace, kernel, and hardware.
- Contribute architecture and code to upstream open-source projects.
What we're looking for
- Hands-on KVM experience and experience with Firecracker, Cloud Hypervisor, or QEMU.
- Strong Linux internals knowledge, including namespaces, cgroups, memory management, and boot flow.
- Experience building provider-side, multi-tenant cloud compute infrastructure.
- Experience with infrastructure isolation as a security boundary.
- Systems programming experience in Rust and/or Go; C/C++ also welcome.
- Ability to debug performance and correctness across userspace and kernel boundaries.
Nice to have
- Contributions to KVM, Firecracker, Cloud Hypervisor, QEMU, rust-vmm, or the Linux kernel.
- Experience with Xen, container runtimes, or sandboxing technologies.
- VM snapshot and restore, fast resume, or custom kernel experience.
- Bare-metal virtualization and CPU or memory architecture tuning.
- Experience building sandbox, serverless, or function runtime products.
- Familiarity with eBPF, perf, or ftrace.
Benefits
- Meaningful equity.
- Medical, dental, and vision coverage fully paid for U.S. employees and dependents.
- Flexible PTO and company-wide winter break.
- Paid parental leave.
- Fertility and family-building stipend.
- Company-facilitated 401(k) for U.S. employees.