Senior Information System Security Representative

General information

Requisition # R65392 Locations USA-WV-Clarksburg Posting Date 01/28/2026 Security Clearance Required TS/SCI 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 Senior Information System Security Representative (ISSR) to join our team in Clarksburg, WV.

Responsibilities include, but are not limited to:

• Provides overall configuration management infrastructure and environment to the product development team.  Developing or modifying CM plans, policies, and procedures tailored to the complexity and scope of the developmental or operational system
• Ensure that FBI ISs are operated, maintained, and disposed of in accordance with the internal security policies and practices outlined in the approved Security Assessment and Authorization (SAA) package.  Manage the SAA process for new FBI ISs and legacy FBI ISs migrating into the GRC application
• Provide baseline security controls to the system owner, contingent upon the IS’s security categorization, type of information processed and entity type.  Provide a recommendation to the Authorizing Official, in consultation with the system owner, regarding systems’ impact levels and ISs’ authorization boundary
• Initiate, coordinate, and recommend to the FBI Authorizing Official all Interconnection Security Agreement (ISAs), Memorandum of Understanding (MOUs), and Memorandum of Agreement (MOAs) that permit the interconnection of an FBI IS with any non-FBI or joint-use IS
• Perform an independent review of the System Security Plan (SSP) and make approval decisions.  Request and negotiate the level of testing required for an IS with the Enterprise Information Security Section and the FBI Authorizing Official.
• Coordinate IS security inspections, tests, and reviews with the Security and system owner. Submit the final SAA package to the FBI Authorizing Official for a security ATO decision. Supporting developmental and operational systems, creating and maintaining configuration baselines. Performing change control and configuration audits
• Ensure that the Security ATO Electronic Communication (EC) is serialized into Sentinel under the applicable case file number.  Advise the FBI Authorizing Official of IS vulnerabilities and residual risks.

Minimum Qualifications:

• A minimum of 7 years of experience serving as an ISSR or in a similar role at a cleared facility
• A minimum of 10 years’ experience in a computer science or cybersecurity related field
• Must hold at least one of