Senior Staff Linux Kernel Engineer

You will set the technical direction for Crusoe's Linux kernel team, owning the roadmap and architecting critical development projects. This role requires a balance of high-level architectural design and hands-on kernel coding. You will tackle the most complex kernel problems while mentoring and growing the engineers around you to deliver production-ready infrastructure at scale.

Responsibilities

Perform deep-dive root-cause analysis of issues across the OS and hardware layers. You will lead the triage and backporting for kernel CVEs while building automated tooling for vulnerability analysis; Architect and lead critical projects — new kernel features, security patching infrastructure, deployment systems — from design through production and upstream; Develop kernel code with an upstream-first mindset — we aim to contribute all changes to the Linux kernel community and keep our downstream patches zero; this is a core part of how the team works, not an afterthought; Develop and review kernel code: memory management, scheduler, networking, storage, and GPU-related subsystems; Design and implement advanced virtualization technologies tailored for GPU-accelerated AI and HPC workloads. You will optimize the stack for low latency and high scalability across hypervisors and device emulation; Find and develop kernel efficiency improvements proactively (e.g., DAMON-based memory management, hugepage optimization, memory overcommit); Mentor and review work from mid-level and junior engineers

Requirements

Deep knowledge of Linux kernel internals — memory management, scheduler, networking, storage subsystems and/or device drivers; Strong C programming skills, fluency in kernel development workflow (patch submission, mailing lists, Lore); Experience evaluating kernel security vulnerabilities: CVE analysis, exploitability assessment, backporting fixes; Demonstrated ability to set technical direction and drive projects end-to-end; Deep knowledge of Linux kernel internals (memory management, scheduler, I/O) and virtualization technologies (KVM, Xen, or QEMU); 10+ years of experience in systems software engineering working on low-level systems or infrastructure teams

Nice to have

Track record of upstream Linux kernel contributions is a strong plus

Benefits

Competitive compensation and equity packages; Restricted Stock Units; Paid time off, paid holidays & leave of absence programs; 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; Volunteer time off; Global travel insurance & emergency assistance; Daily meals allowance; Additional perks & programs specific to location; Bonus