Information Systems Security Officer - TS/SCI with Polygraph

Type of Requisition:

Pipeline

Clearance Level Must Currently Possess:

Top Secret SCI + Polygraph

Clearance Level Must Be Able to Obtain:

Top Secret SCI + Polygraph

Public Trust/Other Required:

None

Job Family:

Cyber and IT Risk Management

Job Qualifications:

Skills:

Information Assurance, Information Technology (IT), Information Technology Security, ISSO

Certifications:

None

Experience:

10 + years of related experience

US Citizenship Required:

Yes

Job Description:

INFORMATION SYSTEMS SECURITY OFFICER

YOUR IMPACT

Own your opportunity to support national defense. Your work will help keep critical operations secure and connected across the global enterprise directly, contributing to a mission that protects our nation every day.

CIS is growing, and we invite both our experienced incumbents and new team members to be part of what’s next. Incumbents bring invaluable mission insight, while new talent adds fresh ideas and energy. Together, we’ll strengthen continuity and drive the next generation of innovation.

MEANINGFUL WORK AND PERSONAL IMPACT

As an Information Systems Security Officer (ISSO) supporting CIS, you will ensure the security, compliance, and continuous authorization of critical enterprise IT systems across multiple networks and security domains. You will oversee system security lifecycle activities, maintain accreditation documentation, identify and mitigate vulnerabilities, and serve as a trusted advisor on all matters involving system security posture. Your work strengthens cyber resilience, supports secure operations, and protects sensitive information across a complex, high visibility enterprise environment. 

KEY RESPONSIBILITIES:

• Oversee day-to-day security operations for assigned systems, ensuring adherence to established security policies, baselines, and authorization requirements
• Manage and maintain system authorization packages, including security plans, network diagrams, STIG artifacts, vulnerability scans, and hardware/software inventories
• Develop, update, and track Plans of Action and Milestones (POA&Ms) to address system vulnerabilities, deviations, risk acceptance, and compliance gaps
• Coordinate security assessments, periodic reviews, monitoring activities, and updates in government security tools (e.g., SYSTEMS) as part of the continuous RMF lifecycle
• Investigate and analyze system security notifications, baseline changes, and configuration updates to ensure compliance with approved authorization requirements
• Support incident investigations, system recovery validations, and troubleshooting to ensure secure restoration of system operations
• Collaborate with engineering, operations, cybersecurity teams, and system owners to resolve security issues and maintain compliant system configurations
• Maintain audit readiness by performing periodic reviews of logs, configurations, and monitoring data to validate compliance and detect anomalies

WHAT YOU’LL NEED TO SUCCEED:

• CLEARANCE: Active TS/SCI clearance with Polygraph
• EDUCATION: Bachelor’s degree in cybersecurity, engineering, or an IT related field, or 10+ years of relevant IT experience in lieu of a degree
• CERTIFICATION: Meet DoD 8140 Information Assurance Workforce certification requirements (e.g., CISSP, etc.)
• Knowledge of National Institute of Standards and Technology (NIST) SP 80053, SP 80037, vulnerability management, and security control implementation
• Experience updating and maintaining security documentation in enterprise security tools (e.g., XACTA or equivalent)
• Strong understanding of system security auditing, configuration management, baseline control, and secure system operations
• Excellent analytical, communication, and coordination skills, with the ability to work across technical and cybersecurity teams          
• US citizenship required
• LOCATION: Onsite

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 an enterprise IT career at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.

#CIS

The likely salary range for this position is $169,604 - $229,464. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.

Scheduled Weekly Hours:

40

Travel Required:

None

Telecommuting Options:

Onsite

Work Location:

USA MD Annapolis Junction

Additional Work Locations:

USA CO Colorado Springs - 8610 Explorer Dr (COC036), USA DC Washington, USA FL MacDill AFB - 7115 S Boundary Blvd (FLC096), USA VA Springfield - 7770 Backlick Rd (VAS110)

Total Rewards at GDIT:

Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.

We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.

Join our Talent Community to stay up to date on our career opportunities and events at

gdit.com/tc.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans