Information Systems Security Officer - TS/SCI with Polygraph

General Dynamics Information Technology • Washington, DC

1d • Onsite

About The Position

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.

Requirements

• Active TS/SCI clearance with Polygraph
• Bachelor’s degree in cybersecurity, engineering, or an IT related field, or 10+ years of relevant IT experience in lieu of a degree
• 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

Nice To Haves

• Information Assurance
• Information Technology (IT)
• Information Technology Security
• ISSO Certifications: None

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

Benefits

• Comprehensive benefits and wellness packages
• 401K with company match
• Competitive pay and paid time off
• Full flex work weeks where possible
• Variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave
• Short and long-term disability benefits
• Life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance

What This Job Offers

• Job Type: Full-time
• Career Level: Senior