Crusoe designs, builds, and operates energy-first AI infrastructure. Its offerings include Crusoe Cloud for GPU-based training, fine-tuning, inference, and managed services, alongside AI-optimized data centers and energy infrastructure.

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Skills

Apparmor C#Confidential Computing Cve Fuzzing Gdb Hardening Hypervisor Incident Response Kernel Linux Security Selinux Static Analysis

Candidate Availability

Onsite · San Francisco · Required

Required and preferred rules are kept separate and reflect the wording in the original posting.

About the Role

You will strengthen kernel and operating-system security through hardening, CVE triage, vulnerability research, secure code reviews, auditing, and incident-response support. You will establish security guardrails, audit hypervisor isolation, balance security with performance, and mentor engineers on kernel security practices.

Requirements

Deep knowledge of Linux kernel internals and security
Knowledge of kernel vulnerabilities and exploitation techniques
Experience with Linux kernel security mitigations
Secure coding and security-focused code review experience in C
Proficiency with kernel debugging and security analysis tools
Familiarity with hardware-assisted security features
Bachelor's degree in Computer Science, Computer Engineering, or a related field
At least 5 years of relevant industry experience, including 3 years in low-level operating systems or kernel security
Ability to pass a background check
Experience with CVE remediation and automation

Responsibilities

Implement kernel hardening and triage CVEs
Enforce access controls, boot security, CI guardrails, and fuzzing coverage
Research vulnerabilities and backport upstream security fixes
Establish secure coding standards and conduct security-focused code reviews
Develop and use security auditing, fuzzing, static-analysis, and dynamic-analysis tools
Support kernel and operating-system security incident response
Audit and harden Cloud Hypervisor device models and vhost-user datapaths
Collaborate on security practices across hardware, hypervisor, operating-system, infrastructure, and security teams
Mentor junior engineers on kernel security practices
Debug and root-cause kernel-level security issues

Benefits

Equity packages
Restricted Stock Units
Paid time off
Paid holidays
Leave of absence programs
Health, dental, and vision insurance
Employer HSA contributions
Paid parental leave
Life insurance
Short-term disability insurance
Long-term disability insurance
Tuition reimbursement
Mental health and wellness support
Commuter benefits
Cell phone stipend
401(k) plan with up to 4% company match
Volunteer time off
Global travel insurance and emergency assistance
Daily meals allowance