Sigma Defense
1784 - Network Security Engineer III
$120K–$150K
San Diego, California · Full-time · Posted Oct 28, 2026
- Experience
- 5 - 10 years of experience.
- Education
- Bachelor's degree from an accredited college or university.
- Visa sponsorship
- Must be a U.S. citizen.
About the job
Enforces DoD cybersecurity policies and hardens, secures, and automates configurations across CANES systems.
What you'll do
- Implement cybersecurity policies and address system vulnerabilities; harden Windows/Linux systems, applications, and network devices.
- Perform vulnerability scanning, patch management, log analysis, incident-response coordination, and audit-readiness work.
- Automate and submit configuration updates, maintain cybersecurity documentation, and support system validation and assessments.
What they ask for
- U.S. citizenship.
- Security+ CE or CISSP certification, plus at least one operating-system/platform certification in Linux, Windows, VMware, or Cisco.
- Must possess or be able to obtain an active Secret clearance or higher.
- Bachelor's degree from an accredited college or university.
Nice to have
- Experience with Sentinel and Splunk.
- RHEL 7+ expertise.
Pay
USD $120,000 - $150,000 annually (base salary)
Tools
ACAS, Trellix ESS, Spork/Spork+, NetIQ SIEM Sentinel, GitLab, GitHub, RHEL, Splunk
Model-written summary · the original posting is authoritative