Senior Staff Linux Security Engineer
Crusoe is an active AI-infrastructure company operating an AI cloud platform, managed AI services, and AI data-center infrastructure.
Projects
About Crusoe, Inc.
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.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will strengthen Linux kernel and operating-system security through hardening, CVE triage, vulnerability research, code review, and security analysis. You will audit hypervisor isolation, support incident response, balance security with performance, and guide engineers on kernel security practices.
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 in low-level operating systems or kernel security
- Deep knowledge of Linux kernel internals and security
- Knowledge of kernel vulnerabilities and exploitation techniques
- Experience with Linux kernel security mitigations
- Experience with secure coding and security-focused C code reviews
- Proficiency with kernel debugging and security analysis tools
- Familiarity with hardware-assisted security features
- Ability to pass a background check
- Experience with CVE remediation and automation
Responsibilities
- Implement kernel hardening and manage secure configuration
- Triage CVEs and assess severity and exploitability
- Enforce access controls, secure boot paths, CI guardrails, and fuzzing coverage
- Research kernel, driver, and operating-system vulnerabilities and implement mitigations
- Backport upstream security fixes to production
- Establish secure coding standards and conduct security-focused code reviews
- Develop and use auditing, fuzzing, static-analysis, and dynamic-analysis tools
- Support incident root-cause analysis, containment, and recovery
- Audit and harden Cloud Hypervisor device models and vhost-user datapaths
- Mentor engineers on kernel security practices
- Debug and root-cause kernel-level security issues
Benefits
- Restricted Stock Units
- Paid time off, paid holidays, and leave of absence programs
- Health, dental, and vision insurance
- Employer HSA contributions
- Paid parental leave
- Paid life insurance and short-term and long-term disability coverage
- Tuition reimbursement
- Mental health and wellness support
- Commuter benefits
- Cell phone stipend
- 401(k) plan with company match up to 4% of salary
- Volunteer time off
- Global travel insurance and emergency assistance
- Daily meals allowance