Information System Security Officer

Locations: Gaithersburg, MD (Primary) | Alexandria, VA | Chantilly, VA | Aurora, CO | St. Louis, MO | Tucson, AZ

Clearance Required: Active Top Secret (TS) with SCI eligibility and ability to obtain a polygraph

Employment Type: Full-time | On-site (Hybrid flexibility may vary)

Salary Range: $125,000 – $200,000

About the Role

We are seeking an experienced Senior Information System Security Officer (ISSO) to support a mission-critical National Geospatial-Intelligence Agency (NGA) program.

The ISSO will oversee cybersecurity compliance, system authorization, and continuous monitoring for enterprise systems supporting the NGA mission. You’ll work alongside engineering and security teams to protect sensitive systems and data through disciplined application of the NIST Risk Management Framework (RMF), Zero Trust principles, and DoD cybersecurity directives.

Key Responsibilities

• Lead and manage RMF processes for assessment, authorization, and ongoing compliance.

• Develop and maintain System Security Plans (SSPs), POA&Ms, CONOPS, and related artifacts in XACTA-360 and ServiceNow.

• Coordinate with Designated Authorization Officials (DAOs) and audit teams for system accreditation and renewals.

• Perform vulnerability analysis and remediation using ACAS, Nessus, and Splunk.

• Evaluate and improve Zero Trust and defense-in-depth implementations.

• Provide expert guidance to engineering and leadership teams on cybersecurity best practices.

• Oversee access control, identity management, and security training programs.

Required Qualifications

• U.S. Citizenship required (per federal contract).

• Active Top Secret clearance with SCI eligibility and ability to obtain a polygraph.

• Bachelor’s degree in Cybersecurity, Computer Science, or related field.

• 8–12 years of relevant cybersecurity or information assurance experience.

• Strong knowledge of:

• NIST SP 800-53, ICD-503, and RMF standards.

• XACTA / XACTA 360, HBSS, ACAS, Nessus, Splunk.

• Minimum 3 years of hands-on vulnerability management and remediation experience.

Preferred Qualifications

• CISSP or CISM certification.

• Familiarity with NGA mission systems or Intelligence Community (IC) environments.

• Strong communication, leadership, and cross-team collaboration skills.

Why Join Us

• Contribute to a mission that protects national security.

• Work with advanced technologies and classified systems.

• Be part of a team that values integrity, accountability, and technical excellence.

• Competitive salary, benefits, and professional development opportunities.