Senior Staff Linux Security Engineer

The role

This role strengthens the security posture of the core Linux kernel and operating system components. You will implement kernel security enhancements, manage CVE triage, and research vulnerabilities to build proactive mitigations.

What you will do

• Implement kernel security enhancements and manage configuration hardening
• Triage incoming CVEs to assess severity and exploitability
• Enforce mandatory access controls and secure the boot path
• Establish CI guardrails and fuzzing coverage
• Research vulnerabilities across kernel, driver, and OS components
• Backport non-trivial upstream fixes to production
• Establish and advocate for secure coding standards
• Conduct security-focused code reviews
• Develop specialized tools for kernel security auditing, fuzzing, and analysis
• Provide expert support during security incidents involving kernel or OS-level compromises

Required qualifications

• Deep knowledge of Linux kernel internals
• Understanding of common kernel vulnerabilities and exploitation techniques
• Experience with Linux kernel security mitigations
• Strong background in secure coding principles and experience conducting security-focused code reviews in C
• Proficiency with kernel debugging tools and security analysis tools
• Familiarity with hardware-assisted security features
• Bachelor's degree in Computer Science, Computer Engineering, or a related field
• Minimum of 5 years of relevant industry experience
• At least 3 years focused on low-level operating systems or kernel security
• Must be able to pass a background check
• Embody the Company values

Nice to have

• Experience with specific kernel security projects or contributions to open-source kernel security initiatives
• Familiarity with hypervisor security and the interaction between the hypervisor and the guest kernel's security
• Experience with hardware security modules (HSMs) or Trusted Platform Modules (TPMs)
• Background in offensive security or penetration testing at the kernel level

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

Before you apply

• Must be able to pass a background check

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 build AI infrastructure.