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Principal Systems Software Architect

Crusoe· Cloud Engineering
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San Francisco, CA - US$260k - $340kFull-timePosted 2mo ago

About the role

Visionary lead for Crusoe’s next-generation AI infrastructure, bridging silicon and software to unify BMaaS, Intelligent IaaS, and Elastic CaaS into a high-performance AI compute fabric. Hands-on leadership for R&D, architecture, and production-grade kernel/o orchestration code.

Responsibilities

  • Unifying Infrastructure Pillars: BMaaS delivering raw GPU throughput via zero-latency InfiniBand/RDMA fabrics for massive-scale training; Intelligent IaaS with optimized virtualization layers (KVM or custom micro-VMs) to reduce virtualization tax; Elastic CaaS with high-performance container substrate (Kubernetes or Slurm) for burstable AI workloads across heterogeneous GPU nodes.
  • Mastering the I/O Path: Architect internal cloud fabric roadmap for SR-IOV, RDMA, and virtualized GPU scheduling.
  • Advanced R&D Leadership: Lead workstreams to prototype and productionize novel memory, networking, and compute management methods not present in standard cloud distributions.
  • Technical Strategy & Documentation: Draft white papers and RFCs outlining Crusoe’s compute and networking roadmap for the next two years.
  • High-Level Debugging: Collaborate with Staff and Senior engineers to resolve race conditions in the I/O path and optimize kernel-level memory pinning for GPU clusters.
  • Industry Influence: Represent Crusoe in open-source communities and industry forums to shape the direction of cloud-native AI infrastructure.

Qualifications

  • 12+ years of experience designing and shipping core infrastructure at a major hyperscaler or 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 performance of NVIDIA/AMD GPUs and high-speed NICs
  • Experience leading cross-functional R&D teams through high-ambiguity projects and delivering production-ready systems
  • Significant contributions to the field (patents, major open-source contributions, or published distributed systems research)
  • Excellent communication skills, ability to connect memory-mapped I/O details to business value
  • Bachelor’s or Master’s in CS/CE or equivalent professional experience

Skills

Required:Hyperscale architectureLinux kernelKVM/QEMU/FirecrackerRDMA / InfiniBandGPU scheduling / virtualization

Benefits

  • Competitive compensation
  • Restricted Stock Units
  • Paid time off & holidays
  • Health, dental & vision insurance
  • Employer contributions to HSA
  • Paid parental leave
  • 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) with company match up to 4%
  • Volunteer time off
Last updated Oct 7, 2026. Interested? Apply on the company site.

About Crusoe

The AI factory company | Renewable-powered AI infrastructure

Crusoe provides next-gen AI infrastructure and cloud compute using an energy-first approach. Deploy AI workloads at scale with reliable performance and 24/7 support.

AI infrastructureData centersEdge computingGPU computingRenewable energycloud computeenergy-first approachsetter-30
Company profileWebsite

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