Activity Security Representative

General information

Requisition # R66626 Locations USA-CA-Los Angeles Posting Date 03/12/2026 Security Clearance Required TS/SCI Remote Type Onsite Time Type Full time

Description & Requirements

Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now—protect and innovate with MANTECH!

MANTECH seeks a motivated, career and customer-oriented Activity Security Representative II to join our team in El Segundo, CA.

The Activity Security Representative’s primary function is to provide multi-disciplined security support to a customer’s facility and organization. The position will provide “day-to-day” support for Collateral, Sensitive Compartmented Information (SCI) and Special Access Program (SAP) activities.

Responsibilities include but are not limited to:

• Assist in the maintenance of a document accountability database and associated correspondence.

• Implement Top Secret Control for accountable material and associated correspondence.

• Prepare and/or process inbound and outbound classified mail, faxes, courier packages and receipts.

• Prepare, process, and/or review Program Access Request (PARs) for accuracy and access eligibility.

• Execute Special Access Program Nomination Process Questionnaires

• Conduct Defense Central Index of Investigations (DCII), Joint Personnel Access System (JPAS), and SAPNP reviews of candidates being submitted for SAP access.

• Perform data entry and record checks in the Joint Access Database (JADE) and maintains all customer sponsored personnel access information current.

Minimum Qualifications:

• Bachelor’s degree in a related field or 4 additional years of direct experience will be considered in lieu of degree.

• 6 + years of relevant experience.

• 3 + years of experience with SCI.

• Must be familiar with security policy/manuals and the appropriate ICDs/JAFANs/DOD Manuals and other guiding policy documents

Preferred Qualifications:

• 1+ year relevant experience with SAR programs desired.

• Working knowledge of Microsoft Office (Word, PowerPoint, and Excel)

Clearance Requirements:

• Current Top Secret Clearance with SCI Eligibility.

• Eligibility for access to Special Access Program Information

• Willingness to submit to a polygraph.

Physical Requirements:

• Must be able to remain in a stationary position 50%.

• The person in this position frequently communicates with co-workers, management and