Network Security Engineer II

📋 Job Overview

Sigma Defense is seeking a Network Security Engineer II to join our team in San Diego, CA.

🏢 About Sigma Defense

Sigma Defense Systems is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

🎯 The Role

Implement and enforce DoD cybersecurity policies (STIGs, RMF, NIST SP 800-53) across CANES systems.

✅ Key Responsibilities

• Design, Develop, implement and troubleshoot solutions for vulnerabilities within the CANES system.
• Lead efforts to harden Windows/Linux systems, applications, network devices, and various hardware within the CANES environment.
• Assist with IAVM compliance, log analysis, and audit readiness tasks.
• Perform patch management, system scanning, and incident response coordination.
• Maintain system documentation, cybersecurity artifacts, and baseline reports.
• Support system validation during test events, site assessments, and production installations.
• Design, develop, and automate configurations on the following platforms:
• Submit configuration updates via GitLab/GitHub, Spork/Spork+.

📌 Required Qualifications

• 3 - 10 years of experience.
• Must be a U.S. citizen.
• Bachelor's degree from an accredited college or university.
• Mandatory Certifications: Security+ CE or CISSP
• At minimum one of the following operating system/platform certifications: Linux, Windows, VMware, Cisco
• Candidate must possess or have the ability to obtain an active Secret security clearance or higher.

⭐ Desirable Experience

• ACAS
• Trellix ESS
• Spork/Spork+
• NetIQ SIEM Sentinel
• RHEL expertise/Admin (RHEL 7+ ideal)
• Windows expertise/Admin (Win2019/2020 -> 2025+)
• SIEM/SOAR, (ArcSight/Splunk/Sentinel etc. Sentinel & Splunk experience Preferred!)
• ACAS (engineering, not just user experience)
• ESS (Trellix) Engineering (not admins)

🎁 Benefits

• Dental and Vision Insurance
• Medical Insurance to Include HSA, FSA, and DFSA Plans
• Life and AD&D coverage
• Employee Assistance Program (EAP)
• 401(k) Plan with Company Matching Contributions
• 160 Hours of Paid Time Off (PTO)
• 12 (Floating) Holidays
• Educational Assistance
• Highly Competitive Salary

🛂 Visa & Eligibility

• Must be a U.S. citizen.
• Candidate must possess or have the ability to obtain an active Secret security clearance or higher.