Information System Security Officer

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 Information Systems Security Officer 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 Information System Security Officer, 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 security audits and RMF control assessments by applying your deep understanding gained through previous ISSO/ISSM responsibilities.

● Review, validate, and enhance security artifacts such as SSPs, POA&Ms, and continuous monitoring deliverables.

● Evaluate system security controls fore effectiveness, sufficiency, and alignment with NIST 800-53, DoW requirements, and organizational policies.

● Work with ISSOs/ISSMs and technical teams to interpret findings, recommend remediation actions, and ensure timely closure of vulnerabilities.

● Analyze system changes, configuration updates, and vulnerability outputs to determine authorization impacts and risk-level adjustments.

● Support ATO maintenance by tracking assessments, evidence, and documentation needed for successful RMF lifecycle execution.

● Ability to prepare and deliver clear, risk focused briefings to system owners and stakeholders regarding audit findings and compliance status.

WHAT YOU’LL NEED TO SUCCEED
Bring your cyber expertise and drive for innovation to GDIT. The ISSO must have:
● Education: Bachelors degree or 4+ years of additional work experience/training/education in lieu of a degree
● Experience: 3+ years of related experience as a prior ISSO/ISSM
● 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.
● Security clearance: Must have an active Secret clearance in order to be considered

● US citizenship required
● Role requirements: Onsite, 5 days/week

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.

#GDITPriority

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