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Staff Kernel Security Engineer

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Staff Kernel Security Engineer in USA

  • San Francisco, CA

Responsibilities

  • Implement Linux kernel security enhancements, configuration hardening, CVE triage, vulnerability mitigations, and backported upstream fixes.
  • Enforce mandatory access controls, secure the boot path, and establish CI guardrails and fuzzing coverage.
  • Research vulnerabilities across kernel, driver, and OS components and conduct security-focused code reviews.
  • Develop and use tools for kernel security auditing, fuzzing, static analysis, and dynamic analysis.
  • Audit and harden Cloud Hypervisor device models and vhost-user datapaths while reducing privilege and contributing upstream fixes.
  • Advance confidential computing primitives including AMD SEV-SNP and Intel TDX.
  • Support security incident response, containment, recovery, debugging, and root-cause analysis for kernel and OS compromises.
  • Balance security improvements with the performance requirements of high-performance AI infrastructure.
  • Provide technical guidance and mentorship to junior engineers and collaborate across engineering and security teams.

Requirements

  • Bachelor’s degree in Computer Science, Computer Engineering, or a related field.
  • At least 5 years of relevant industry experience, including at least 3 years focused on low-level operating systems or kernel security.
  • Deep knowledge of Linux kernel internals, including memory management, process scheduling, system calls, and I/O subsystems.
  • Understanding of kernel vulnerabilities, exploitation techniques, CVE remediation, and automation.
  • Experience with Linux kernel security mitigations such as ASLR, DEP/NX, SMEP/SMAP, KASLR, namespaces, cgroups, and LSMs.
  • Strong secure coding background and security-focused code review experience, particularly in C.
  • Proficiency with kernel debugging and security analysis tools such as GDB, crash, kgdb, valgrind, address sanitizers, and fuzzers.
  • Familiarity with hardware-assisted security features including Intel SGX, AMD SEV, and ARM TrustZone.
  • Ability to pass a background check.
  • Preferred qualifications include kernel security open-source contributions, hypervisor security experience, HSM or TPM experience, and kernel-level offensive security or penetration-testing experience.

Benefits

  • Competitive compensation, bonus, equity packages, and Restricted Stock Units.
  • Paid time off, paid holidays, leave programs, and paid parental leave.
  • Comprehensive health, dental, and vision insurance, plus HSA contributions.
  • Paid life insurance and short-term and long-term disability coverage.
  • Professional development, tuition reimbursement, and mental health and wellness support.
  • Commuter benefits, a cell phone stipend, daily meal allowance, and location-specific perks.
  • 401(k) retirement plan with company match up to 4% of salary.
  • Volunteer time off and global travel insurance with emergency assistance.
  • Full-time position.

Salary: $215k - $260k/yr

Crusoe

As the AI factory company, Crusoe is on a mission to accelerate the abundance of energy and intelligence. The company provides a reliable, scalable, cost-effective, and energy-first solution for AI infrastructure. By harnessing large-scale energy resources, building AI-optimized data centers, and...

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