Information Systems Security Officer

General information

Requisition # R67267 Locations USA-VA-Chantilly Posting Date 04/21/2026 Security Clearance Required TS/SCI w/ Poly Remote Type Onsite Time Type Full time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!

ManTech seeks a motivated, career and customer-oriented Information Systems Security Officer to join our team in Chantilly, VA
 

The Information Systems Security Officer (ISSO) will leverage their strong technical background and knowledge to support the Sponsor’s system accreditation efforts, to include creating Body of Evidence (BOE) documentation, responding to/implementing/documenting required controls, and completing required tasks/actions.
 

Responsibilities include but are not limited to:

• Creating, updating, maintaining, and interpreting required Body of Evidence (BOE) documentation
• Working with management, internal teams, and Sponsor’s authorities to successfully navigate the Sponsor’s accreditation process for all systems
• Documenting responses to required controls and updating as necessary while maintaining a robust library of documentation, to include network diagrams for cyber defense capabilities and sensors, and making documentation available to all personnel with appropriate need-to-know
• Maintaining, updating, and conducting routine vulnerability scanning across all Sponsor networks
• Maintaining system baselines and configuration management items, including security event monitoring policies
• Working with all stakeholders to ensure complete and functioning systems that meet all requirements
• Recommending, and when approved, implementing process and policy improvements
   

Minimum Qualifications:

• High School Diploma/GED with 15+ years of progressively responsible experience in Information Systems Security
• Significant experience navigating the Sponsor's accreditation process and ICD 503 requirements, especially as it relates to creating A&A Body of Evidence (BOE) documentation
• Significant experience meeting security requirements in the Sponsor's environment or similar environments
• Experience working across a large team to drive a security agenda and working with complex, intertwined systems and data flows
• Experience inventorying complex networks, and with network documentation (security compliance, configuration management, patching, centralized authentication, removable media, etc.)
• Experience creating, maintaining, and communicating complex information technology documentation, particularly network and security documentati