ISSO: Lead Cybersecurity for Global Defense Ops

General Dynamics Information Technology; Washington (District of Columbia); On-site; USD 130,000 - 180,000; Full time

Job summary

General Dynamics Information Technology is seeking an Information Systems Security Officer (ISSO) to safeguard critical information systems across multiple classified domains. You will manage the full security lifecycle, ensure continuous compliance, and support accreditation updates in a globally distributed environment.

You will work as a primary cybersecurity advisor, maintain authorization packages, and oversee continuous monitoring to sustain Authority to Operate.

Qualifications

• Active TS/SCI clearance with CI Polygraph.
• Bachelor's degree in an IT-related field, or 10+ years of relevant IT experience in lieu of a degree.
• DoD 8140 Information Assurance Workforce certification requirements (e.g., Security+ CE).
• Hands-on experience performing ISSO functions under the RMF.
• Strong understanding of NIST SP 80037/80053 and FISMA-aligned security practices.
• Experience managing authorization package documentation, vulnerability assessments, and STIG compliance.
• Ability to evaluate system risks, track remediation, and coordinate security efforts across engineering and operations teams.

Responsibilities

• Serve as the primary cybersecurity advisor on system security posture, threats, vulnerabilities, and compliance requirements
• Maintain and update security authorization packages, documentation, and baseline artifacts throughout the system lifecycle
• Ensure systems retain active Authority to Operate through continuous monitoring, updates, and alignment with security policies
• Develop and manage POA&Ms, risk acceptance requests, waivers, and exceptions for identified vulnerabilities
• Perform periodic system reviews, update security controls, and coordinate required security-driven configuration changes
• Audit system logs and monitors outputs to identify compliance issues or abnormal activity and coordinate remediation
• Oversee secure system recovery, validating restoration of approved security configurations
• Manage system decommissioning activities, ensuring secure sanitization and proper documentation
• Collaborate with engineers, system owners, and technical teams to validate controls and support accreditation updates

Skills

Active TS/SCI clearance

RMF experience

NIST SP 80037/80053

FISMA practices

Authorization packages

Vulnerability assessments

DoD 8140 requirements

Communication skills

Collaboration

Education

Bachelor's degree in IT-related field

10+ years IT experience in lieu of degree

DoD 8140 IA Workforce Certification (Security+ CE)

Tools

Splunk

Vulnerability monitoring tools

Job description

General Dynamics Information Technology is seeking an Information Systems Security Officer (ISSO) to safeguard critical information systems across multiple classified domains. You will manage the full security lifecycle, ensure continuous compliance, and support accreditation updates in a globally distributed environment.

You will work as a primary cybersecurity advisor, maintain authorization packages, and oversee continuous monitoring to sustain Authority to Operate.