Senior Software Engineer, Windows Sandboxes
Software Engineering · Full-time
Posted on Nov 5, 2026
Senior Software Engineer, Windows Sandboxes
6 more properties
Location: San Francisco
Type: Full-time
Reports to: Engineering Lead, Windows Sandboxes
The role
You will make Windows behave like a serverless primitive: boot fast, snapshot instantly, fork on demand, and hand control to an AI agent over an API. This is unglamorous, high-leverage systems work at the intersection of Linux virtualization and Windows internals, and very few people in the world can do it well.
What You'll Do
Build the Windows guest stack on KVM/QEMU: virtio drivers, guest agents, image pipelines, unattended provisioning
Attack Windows boot and login latency; build snapshot/restore and fork that actually work for Windows guests
Build the control plane surfaces agents use: input injection, display streaming, file transfer, process and app lifecycle APIs
Automate image builds and updates: patching, software installation, sysprep, golden image management at fleet scale
Instrument and improve density, cost, and reliability of Windows hosts
Debug across the boundary: hypervisor on one side, Windows kernel and services on the other
What We're Looking For
5+ years of systems engineering in production
Real experience with Windows guests on Linux hypervisors (KVM/QEMU + virtio) or equivalent depth in Windows virtualization internals
Strong Windows internals: boot, services, session management, registry, PowerShell/WinRM automation
Solid systems language skills (Go, Rust, C/C++, or C# where it counts)
Ownership mentality; you run what you build
Nice to have
Remote display protocol experience (RDP stack, Spice, WebRTC-based streaming)
Windows driver development or guest agent development
Experience with desktop automation, UI testing infrastructure, or computer-use agents
Packer/image-as-code tooling for Windows
About Daytona
Daytona is the infrastructure layer for AI agents. We provide secure, isolated, instantly available sandboxes where agents run code, use computers, and train. Our platform powers agent workloads, reinforcement learning, and developer environments for some of the largest AI companies in the world. We just raised a $60M Series B at a $1B valuation — an 8x step-up from our Series A earlier this year. We are growing fast and hiring across the board.
You can send your application directly to careers@daytona.io.
Successful candidates will be contacted for an interview. We appreciate all the applications we receive, but only those selected for an interview will be contacted.