RMF & A&A ISSO — DoD Cyber Defense Lead

Sigma Defense Systems; March Air Reserve Base (CA); On-site; USD 118,000 - 138,000; Full time

Benefits offered by this job

Dental and Vision Insurance

Medical Insurance with HSA/FSA/DFSA

401(k) with company matching

Job summary

Sigma Defense Systems is seeking an Information System Security Officer to join our team at March Air Reserve Base, CA. The role focuses on RMF activities, continuous monitoring, vulnerability management, and system certification to maintain secure DoD information systems throughout their lifecycle.

Candidates must hold a Bachelor's in Cybersecurity or related field, 3-7 years of IA experience, and US citizenship. Active TS/SCI not required at application but preferred for security clearances.

Qualifications

• Bachelor's degree in Cybersecurity or related field.
• 3-7 years of relevant experience in IA/cybersecurity or RMF.
• Experience with RMF documentation and A&A activities.
• Familiarity with NIST SP 800-53 controls and STIGs.
• Experience supporting vulnerability management and cybersecurity compliance.

Responsibilities

• Perform routine vulnerability assessments using ACAS and coordinate remediation with engineering staff.
• Review and verify DISA STIG compliance for Windows and Linux platforms.
• Develop and maintain POA&Ms and track progress.
• Support continuous monitoring and overall security posture of systems.
• Prepare cybersecurity documentation and status updates for government stakeholders.

Skills

RMF experience

NIST SP 800-53

Vulnerability management

A&A activities

ACAS/STIG/SCAP

CDS technologies

FMV systems

US citizenship

Education

Bachelors in Cybersecurity or related field

Tools

ACAS

STIG Viewer

SCAP Compliance Checker

Job description

Sigma Defense Systems is seeking an Information System Security Officer to join our team at March Air Reserve Base, CA. The role focuses on RMF activities, continuous monitoring, vulnerability management, and system certification to maintain secure DoD information systems throughout their lifecycle.

Candidates must hold a Bachelor's in Cybersecurity or related field, 3-7 years of IA experience, and US citizenship. Active TS/SCI not required at application but preferred for security clearances.