Information System Security Manager

Public Trust: None

Requisition Type: Regular

Your Impact

Own your opportunity to be at the center of GDIT’s business operations. Make an impact by collaborating across functions to make mission success achievable.

Job Description

Help safeguard critical government systems by applying your hands-on ISSM/ISSO experience to security governance, risk evaluation, and compliance oversight. As an IT and Cyber Risk Auditor at GDIT, you will leverage your background managing RMF controls, system documentation, and continuous monitoring activities to deliver thorough, accurate, and mission‑focused security assessments.

This role is ideal for cybersecurity professionals who have previously served as an ISSM or ISSO and are seeking to transition into a dedicated risk, audit, and compliance position where they can influence security posture across multiple systems and programs.

MEANINGFUL WORK AND PERSONAL IMPACT

As an IT and Cyber Risk Auditor, the work you do at GDIT will have a direct and measurable impact on our customer’s mission. You’ll help ensure the integrity, security, and compliance of their IT systems by identifying potential risks, validating critical controls, and supporting continuous improvement efforts. Your work will enhance operational resilience and enable the customer to execute their mission with confidence.

● Conduct comprehensive security audits and RMF control assessments in accordance with DCSA, JSIG, and SAP security requirements, leveraging prior ISSO/ISSM experience.

● Review, validate, and improve security documentation and artifacts such as SSPs, POA&Ms, Continuous Monitoring outputs, and other evidence required by RMF and DCSA assessment standards.

● Develop, implement, and oversee operational information system security policies and guidelines aligned with the Risk Management Framework (RMF), JSIG, and applicable DCSA directives.

● Evaluate system security controls for effectiveness, completeness, and compliance with NIST SP 800‑53, DCSA/DoD requirements, JSIG standards, and internal organizational policies.

● Collaborate with ISSOs, ISSMs, SAP security personnel, and technical teams to analyze findings, recommend remediation actions, and ensure timely correction of identified vulnerabilities.

● Analyze system changes, configuration updates, and vulnerability data to determine authorization impacts, risk‑level changes, and required updates under RMF and JSIG/SAP processes.

● Support ongoing ATO and SAP authorization maintenance by tracking assessments, evidence submissions, and documentation required throughout the RMF and JSIG lifecycles.

● Prepare and deliver clear, risk‑focused briefings to system owners, DCSA assessors, SAP authorities, and other stakeholders regarding compliance status, audit results, and security‑related decisions.

WHAT YOU’LL NEED TO SUCCEED
Bring your cyber expertise and drive for innovation to GDIT. The IT and Cyber Risk Auditor must have:
● Education: Bachelors degree
● Experience: 2+ years of related experience as a prior ISSO/ISSM. In lieu of degree, additional 4+ years of work experience/training/education will be required

● Certifications: IAT II (Security +, SSCP, CCNA Security)

● Technical skills: Strong understanding of NIST SP 800-53, DoW cybersecurity requirements, and control implementation/assessment practices. Familiarity with Windows/Linux environments, vulnerability tools, and security baselines.

● Prior SAP experience desired
● Security clearance: Must have an active Top Secret clearance in order to be considered, and the ability to obtain and maintain TS/SCI clearance.

● US citizenship required
● Role requirements: Onsite, 5 days/week in Falls Church, VA office location

GDIT IS YOUR PLACE
At GDIT, the mission is our purpose, and our people are at the center of everything we do.
● Growth: AI-powered career tool that identifies career steps and learning opportunities.
● Support: An internal mobility team focused on helping you achieve your career goals.
● Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off.
● Community: Award-winning culture of innovation and a military-friendly workplace.

OWN YOUR OPPORTUNITY
Explore a career in cyber at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your focus on defending and protecting what matters.

Work Requirements

Years of Experience

3 + years of related experience

* may vary based on technical training, certification(s), or degree

Certification

CompTIA - Security+ CE - CompTIA - CompTIA

Travel Required

Less than 10%

Citizenship

U.S. Citizenship Required