ISSO: Protect NGA Systems & Lead RMF Security

CACI International Inc.; St. Louis (MO); On-site; USD 75,000 - 158,000; Full time

Benefits offered by this job

Flexible time off

Learning resources

Healthcare benefits

Job summary

CACI International Inc. seeks an Information Systems Security Officer (ISSO) to support NGA programs.

You will serve as the primary security liaison for assigned information systems, ensuring RMF compliance and maintaining ATO readiness in collaboration with system owners, ISSMs, and government stakeholders. Responsibilities include overseeing the RMF lifecycle, preparing SSPs and POA&Ms, conducting vulnerability scans, and reporting security posture to program leadership.

Qualifications

• Active Top Secret clearance with ability to obtain SCI and polygraph.
• 3+ years as ISSO or in a DoD/IC cybersecurity role.
• Experience with RMF lifecycle and NIST SP 800-53 controls.

Responsibilities

• Serve as ISSO for assigned information systems and liaise with AO.
• Support RMF lifecycle: categorization, control selection, authorization, and continuous monitoring.
• Prepare SSPs, risk assessments, contingency plans, and POA&Ms.
• Conduct security control assessments, vulnerability scans, and remediation tracking.
• Maintain system access controls and support ATO renewals.

Skills

Top Secret clearance

RMF knowledge

NIST SP 800-53

SSP/POA&M preparation

Education

Bachelor's degree in a related field

Tools

STIGs

ACAS/Nessus

Xacta/eMASS

Job description

CACI International Inc. seeks an Information Systems Security Officer (ISSO) to support NGA programs.

You will serve as the primary security liaison for assigned information systems, ensuring RMF compliance and maintaining ATO readiness in collaboration with system owners, ISSMs, and government stakeholders. Responsibilities include overseeing the RMF lifecycle, preparing SSPs and POA&Ms, conducting vulnerability scans, and reporting security posture to program leadership.