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Senior Staff Linux Security Engineer

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Senior Staff Linux Security Engineer in USA

  • Sunnyvale, CA

Responsibilities

  • Implement Linux kernel security enhancements, configuration hardening, access controls, secure boot protections, and CI guardrails.
  • Triage CVEs, assess exploitability, research kernel and OS vulnerabilities, and backport non-trivial upstream fixes.
  • Audit and harden Cloud Hypervisor device models and vhost-user datapaths while advancing confidential computing primitives.
  • Develop and use fuzzing, static analysis, dynamic analysis, and kernel security auditing tools.
  • Establish secure coding practices, conduct security-focused C code reviews, and support kernel- and OS-level incident response.
  • Balance security improvements with performance requirements for high-performance AI infrastructure.
  • Provide technical mentorship and collaborate with hardware, hypervisor, OS, cloud infrastructure, and security operations 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 and kernel vulnerabilities, exploitation techniques, and security mitigations.
  • Experience with secure coding principles and security-focused code reviews, particularly in C.
  • Proficiency with kernel debugging and security analysis tools including GDB, crash, kgdb, valgrind, address sanitizers, and fuzzers.
  • Familiarity with hardware-assisted security features such as Intel SGX, AMD SEV, and ARM TrustZone.
  • Experience with CVE remediation and automation, with the ability to pass a background check.
  • Preferred qualifications include open-source kernel security contributions, hypervisor security, HSMs or TPMs, and kernel-level offensive security or penetration testing.

Benefits

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

Salary: $250k - $300k/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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