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# Software Engineer, Compute and Isolation

- **Company:** Baseten, Inc
- **Location:** San Francisco, CA, United States
- **Contract:** Permanent contract
- **Skills:** C++ (Programming Language), Cloud Computing, Software Debugging, Linux, Memory Management, Hypervisor, Kernel-Based Virtual Machine, Linux Kernel, Quick EMUlator (QEMU), System Programming, Xen Servers, Rust (Programming Language), Bare Metal, Serverless Computing
- **Published:** October 28, 2026
- **Apply:** https://startup.jobs/software-engineer-compute-and-isolation-baseten-10591292

## About the Role

* 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

NICE TO HAVE

 * Contributions to KVM, Firecracker, Cloud Hypervisor, QEMU, rust-vmm, or the Linux kernel
 * Experience with Xen
 * Working knowledge of container runtimes and sandboxing (containerd, runc, gVisor, Kata Containers)
 * Experience with VM snapshot and restore, fast VM resume, or building and tuning custom Linux kernels
 * Experience running virtualization on bare metal and tuning for specific CPU and memory architectures
 * Experience building a sandbox, serverless, or function runtime product
 * Familiarity with Linux performance tooling such as eBPF, perf, and ftrace

## Description

* Own the microVM lifecycle for agent sandboxes: start, stop, suspend, resume, snapshot, and fork
 * Build and tune the custom guest kernels sandboxes run on
 * Tune host CPU and memory configuration so sandboxes run fast and safely on each type of hardware we operate
 * Manage host-level resources and sandbox density on each machine
 * Own startup and resume performance end to end, from VM boot or snapshot restore to the first command
 * Own the guest and host side of each sandbox: its identity, how it attaches to storage, and the virtual devices that connect it to the network
 * Design isolation for multi-tenant workloads where the hypervisor is the security boundary
 * Debug virtualization and isolation issues at scale, from userspace through the kernel to the hardware
 * Contribute architecture decisions and code back to the open-source projects we build on