Information Systems Security Officer

Job Title: Information Systems Security Officer
Job Category: Security
Time Type: Full time
Minimum Clearance Required to Start: Top Secret
Employee Type: Regular
Percentage of Travel Required: None
Type of Travel: None

• *
• The Opportunity:

CACI is seeking a experienced Information System Security Officer (ISSO) to support a mission-critical program for the National Geospatial-Intelligence Agency (NGA). In this role, you will serve as the primary point of contact for security matters related to assigned information systems, ensuring they are operated, maintained, and disposed of in accordance with applicable security policies, procedures, and the Risk Management Framework (RMF). You will work closely with system owners, ISSMs, government stakeholders, and technical teams to maintain a strong security posture across the program, support continuous monitoring efforts, and help ensure systems maintain their Authorization to Operate (ATO). This position offers the opportunity to directly support national security missions in a fast-paced, geospatial intelligence environment.

Responsibilities

Serve as the ISSO for one or more assigned information systems, acting as the liaison between system owners, ISSMs, and the Authorizing Official (AO)
Support the full RMF lifecycle: categorization, control selection, implementation, assessment, authorization, and continuous monitoring
Prepare, update, and maintain security authorization artifacts, including System Security Plans (SSPs), risk assessments, contingency plans, and Plans of Action and Milestones (POA&Ms)
Conduct and support periodic security control assessments, vulnerability scans, and audits; track remediation of findings
Monitor systems for security-relevant events and respond to/report security incidents in accordance with agency policy
Ensure systems are operated in compliance with NGA, DoD, and IC security policies (e.g., ICD 503, NIST SP 800-53, CNSSI 1253)
Support configuration management processes, including review of proposed system changes for security impact
Maintain user access controls, including account management, least privilege, and periodic access reviews
Support account audits, media protection, and system hardening activities (e.g., STIG compliance)
Coordinate with the ISSM and government customer to maintain and renew system Authorizations to Operate (ATOs)
Deliver regular status reports and briefings to program leadership and government stakeholders on the security posture of assigned systems
Qualifications:
Required Qualifications:
Active Top Secret clearance with the ability to obtain/maintain SCI and polygraph
DoD 8570/8140 IAM Level II certification (e.g., Security+, CySA+, CAP, or equivalent)
3+ years of experience as an ISSO or in a similar cybersecurity role supporting DoD/IC systems
Working knowledge of the Risk Management Framework (RMF) and NIST SP 800-53 controls
Experience preparing or maintaining security authorization documentation (SSPs, POA&Ms, contingency plans)
Familiarity with STIGs, ACAS/Nessus scanning, and vulnerability remediation processes
Strong written and verbal communication skills, with the ability to interface directly with government customers
Bachelor's degree in a related field or equivalent combination of experience and training
Desired Qualifications:
Experience supporting NGA or other NGA/IC customer environments specifically
AWS certification (e.g., AWS Certified Cloud Practitioner or higher) and hands-on experience securing cloud-hosted systems
Experience with Momentum Financials (Unison/CGI) in a security support or system administration capacity
CISSP or other DoD 8570 IAM Level III certification
Experience with Xacta, eMASS, or similar RMF/GRC tools
Familiarity with container/cloud security practices and continuous ATO (cATO) concepts
Prior experience supporting a geospatial intelligence, imagery, or mapping-related program
What You Can Expect:
A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you'll be part of a high-performing group dedicated to our customer's missions and driven by a higher purpose - to ensure the safety of our nation. An environment of trust. CACI values the unique contributions that every employee brings to our company and our customers - every day. You'll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality. A focus on continuous growth.

Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground - in your career and in our legacy.

Pay Range

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities.

Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits. The proposed salary range for this position is:
$75,200-$158,100
CACI is an

Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.