Information System Security Officer – ISSO

CACI International Inc

ISSO managing cybersecurity assessment and security configuration for a telecommunication system at CACI. Collaborating with a diverse team on DoD software projects.

Posted 5/10/2026full-timeChantilly • Virginia • 🇺🇸 United StatesSeniorLead💰 $90,300 - $189,600 per yearWebsite

Tech Stack

Tools & technologies

Cyber Security

About the role

Key responsibilities & impact

The ISSO is responsible for the Information Assurance and Security system and network services.
Responsible for activities associated with delivery of Cybersecurity policy implementation and network solutions associated with customer-defined systems and software projects; responsibilities include:
Meet the government’s cybersecurity accreditation process to achieve an Authority to Operate (ATO).
Maintain the Security Authorization or Authorization to Operate (ATO) of assigned systems and conduct initial and annual risk assessments.
Identify required STIGs and guide system certification based on project requirements.
Prepare a certification package, including STIG assessment and documentation, vulnerability and scan assessments, and conduct quarterly software security reviews.
Ensure all security measures comply with applicable government policies.
Draft and/or prepare and maintain security Assessment and Authorization documentation (e.g., IA SOP, SSP, SCTM).
Develop, monitor and resolve Plan of Action and Milestones (POA&M) to mitigate system vulnerabilities on assigned facilities and Information Systems.
Participate in internal and external security audits and inspections and perform risk assessments.

Requirements

What you’ll need

Must be a U.S. Citizen, with an active Government security clearance.
College degree (B.S., M.S.) in Information Assurance, Computer Science, Information Management Systems or a related discipline or equivalent years of experience.
Must have Security+ Certification or equivalent DOD 8570 IAT Level 2 certification.
CISSP certified a plus.
Demonstrated knowledge of National/DoD/Army Directive security policies.
Demonstrated knowledge of directive, guidelines, processes, and procedures for maintaining the security, integrity, and confidentiality of secure facilities, containers, and communications.
Demonstrated experience using Army or equivalent eMASS.
Demonstrated experience with Assured Compliance Assessment Solution (ACAS)/Tenable Nessus Vulnerability Scanner.
Demonstrated experience with DISA Security Content Automation Protocol (SCAP), Evaluate STIG (eSTIG), and STIG Viewer v3 required.
Demonstrated knowledge of DOD RMF accreditation implementation.
Ability to identify and manage risk.
Excellent written and verbal communication skills.
Strong collaboration skills and desire to work within a team.
Understanding of all elements of the DOD Cybersecurity policies and requirement.
Highly responsible, team-oriented individual with very strong communication skills and work ethic; self-starter.
10+ years related technical experience.

Benefits

Comp & perks

healthcare
wellness
financial
retirement
family support
continuing education
time off benefits

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

Information AssuranceCybersecurity policy implementationRisk assessmentsSTIG assessmentVulnerability assessmentSecurity AuthorizationPlan of Action and Milestones (POA&M)Security auditsDOD RMF accreditation implementationeMASS

Soft Skills

Excellent written communicationExcellent verbal communicationCollaborationTeam-orientedSelf-starterStrong work ethicAbility to identify and manage risk

Certifications

Security+ CertificationDOD 8570 IAT Level 2 certificationCISSP