Senior Linux Kernel Security Engineer (Staff)

Crusoe; San Francisco (CA); On-site; USD 215,000 - 260,000; Full time

Benefits offered by this job

RSUs

Health insurance

401(k) matching

Paid time off

HSA employer contributions

Parental leave

Life insurance

Tuition reimbursement

Job summary

Crusoe seeks a Staff Software Engineer specializing in Linux kernel security to strengthen the security posture of Crusoe’s core kernel and OS components powering AI workloads. You will lead kernel hardening, CVE triage, and secure development practices across hardware, hypervisor, and cloud services.

You will collaborate with hardware, OS, and security teams, mentor junior engineers, and ensure high‑assurance, high‑performance security for Crusoe’s AI infrastructure.

Qualifications

• Deep knowledge of Linux kernel internals (memory management, scheduling, syscalls, I/O) with a security focus.
• 5+ years in OS/kernel security or related field.
• Experience with CVE remediation and backporting fixes upstream.

Responsibilities

• Kernel hardening and CVE triage; triage severity and exploitability of CVEs.
• Enforce access controls, secure boot, and CI guardrails; extend fuzzing coverage.
• Research vulnerabilities and build proactive mitigations; backport fixes to production.

Skills

Kernel Security

Vulnerability Exploitation

Secure Coding

GDB Debugging

KGDB

Security Mitigations

C Programming

Root Cause Analysis

Education

Bachelor's degree in CS/CE or related

Tools

GDB

Crash

KGDB

Valgrind

AddressSanitizers

Fuzzers

Job description

Crusoe seeks a Staff Software Engineer specializing in Linux kernel security to strengthen the security posture of Crusoe’s core kernel and OS components powering AI workloads. You will lead kernel hardening, CVE triage, and secure development practices across hardware, hypervisor, and cloud services.

You will collaborate with hardware, OS, and security teams, mentor junior engineers, and ensure high‑assurance, high‑performance security for Crusoe’s AI infrastructure.