Crusoe
Principal Systems Software Architect
San Francisco, CA - US. Posted 3 months ago
The role
You will serve as the visionary lead for next-generation AI infrastructure. You will design the fabric unifying Bare-Metal-as-a-Service, Intelligent IaaS, and Elastic CaaS while advising executive leadership on hardware/software co-design.
What you will do
- Architect systems that deliver raw GPU throughput via zero-latency InfiniBand/RDMA fabrics
- Design highly optimized, thin virtualization layers using KVM or custom micro-VMs
- Build a high-performance container substrate utilizing Kubernetes or Slurm
- Lead the architectural design of the internal cloud fabric
- Lead elite workstreams to prototype and productionize novel methods for managing memory, networking, and compute
- Draft white papers and RFCs that define the compute and networking stack
- Work alongside Staff and Senior engineers to resolve complex race conditions and optimize kernel-level memory pinning
- Represent Crusoe in open-source communities and industry forums
Required qualifications
- 12+ years of experience designing and shipping core infrastructure at a major hyperscaler or a specialized HPC cloud
- Authoritative knowledge of the Linux kernel, virtualization internals (KVM, QEMU, Firecracker), and high-performance networking (RoCE v2, InfiniBand)
- Proven ability to design software that maximizes the performance of NVIDIA/AMD GPUs and high-speed NICs
- Experience leading cross-functional teams through high-ambiguity projects and delivering production-ready, mission-critical systems
- A portfolio of significant contributions to the field, which may include patents, major open-source contributions, or published research in distributed systems
- Ability to explain memory-mapped I/O to an engineer and business value of fabric architecture to the Board
- Bachelor’s or Master’s degree in Computer Science, Computer Engineering, or a related analytical field (or equivalent professional experience)
Nice to have
- Patent Holder related to network virtualization, GPU scheduling, or distributed file systems
- Maintainer status or significant contributions to the Linux Kernel, Kubernetes, or specialized HPC projects
- Direct experience optimizing infrastructure for Large Language Model (LLM) training and inference at scale
- Peer-reviewed publications at top systems venues (OSDI, SOSP, NSDI, SC), patents, IETF RFCs
- Significant open-source contributions, or industry white papers on distributed systems, high-performance networking, or AI infrastructure
Benefits
- Competitive compensation
- Restricted Stock Units
- Paid time off & paid holidays
- Comprehensive health, dental & vision insurance
- Employer contributions to HSA account
- Paid parental leave
- Paid life insurance, short-term and long-term disability
- Professional development & tuition reimbursement
- Mental health & wellness support
- Commuter benefits (parking & transit)
- Cell phone stipend
- 401(k) Retirement plan with company match up to 4% of salary
About the company
Crusoe is a vertically integrated AI infrastructure company that owns and operates each layer of the stack to power AI workloads. They use an energy-first approach to solve the demand for AI compute and power bottlenecks.