# Staff Cloud Hypervisor R&D
**Company:** [Crusoe](https://hotfix.jobs/companies/crusoe)
**Location:** San Francisco, CA, Sunnyvale, CA
**Salary:** $204K-$247K
**Experience:** 7+ years
**Skills:** Kvm, Qemu, Rust, Sr-Iov, Vfio, Nvidia Gpus, Bluefield Dpus, Linux Kernel, C, C++, Virtio, Vhost-User, Ebpf, Perf (Linux Profiler)
**Posted:** 2026-03-13
> Leads R&D for next-generation hypervisor optimized for AI workloads with massive GPU fleets, focusing on zero-latency hardware virtualization, performance profiling, and security isolation. Requires 7+ years in hypervisors, kernel development, and AI hardware expertise.
## Job Description
## What You’ll Be Working On

- **Next-Gen Hypervisor Architecture**: Lead the R&D and implementation of core hypervisor components (KVM, QEMU, or custom Rust-based solutions) specifically optimized for massive-scale GPU fleets.
- **AI Hardware Virtualization**: Develop and refine advanced hardware pass-through and abstraction techniques (SR-IOV, VFIO, mdev) to ensure NVIDIA GPUs and BlueField DPUs operate with near-zero latency in a multi-tenant environment.
- **The "Holy Grail" Challenges**: Solve high-stakes technical hurdles such as live migration for AI workloads with 80GB+ VRAM and optimizing PCIe peer-to-peer communication between virtualized accelerators.
- **Performance Research & Profiling**: Conduct deep-dive bottleneck analysis across the entire stack—from CPU microarchitecture and MMU virtualization to guest OS scheduling—to minimize jitter and maximize throughput.
- **Open Source Leadership**: Actively contribute to and maintain upstream open-source virtualization projects, positioning Crusoe as a thought leader in the Linux kernel and virtualization communities.
- **Security & Isolation**: Architect robust security boundaries for AI-native cloud infrastructure, balancing high-performance hardware access with strict multi-tenant isolation and hardening.

## What You’ll Bring to the Team

- **7+ Years of Experience**: Proven track record in hypervisor internals, kernel development, or low-level systems programming.
- **Deep Virtualization Expertise**: Expert-level knowledge of CPU virtualization (Intel VT-x, AMD-V) and memory virtualization (EPT/NPT, HugePages). Comfortable discussing the nuances of VMExit overhead.
- **Hardware-Software Integration**: Experience working with specialized AI hardware, including GPUs, InfiniBand/RoCE NICs, and SmartNICs/DPUs.
- **Programming & Tooling**: Mastery of C and C++ is required; proficiency in Rust for modern systems programming is highly preferred. Experience with QEMU, KVM, and Linux kernel debugging tools (perf, ftrace, eBPF).
- **I/O Mastery**: Deep understanding of VirtIO, vhost-user, and hardware-accelerated I/O paths.
- **Technical Leadership**: Experience leading complex, cross-functional projects that bridge the gap between hardware engineering and cloud control planes.

## Compensation

Compensation will be paid in the range of $204,000 - $247,000. Restricted Stock Units are included in all offers.
**Apply:** https://hotfix.jobs/jobs/staff-cloud-hypervisor-r-d-at-crusoe-6be52d9b-6d63-4f42-a57b-067e7ffc5291
**Canonical:** https://hotfix.jobs/jobs/staff-cloud-hypervisor-r-d-at-crusoe-6be52d9b-6d63-4f42-a57b-067e7ffc5291