Activity Security Representative

ManTech International seeks an Activity Security Representative to support sensitive U.S. defense and intelligence missions. In this role, you will manage personnel and physical security for classified programs, control access to secure spaces, track clearances, and enforce DoD and IC security policies. You will conduct briefings, maintain security records, support inspections, and respond to incidents. Working within a mission-focused, collaborative team, you'll help protect critical information while accessing strong training, career growth, and veteran-friendly programs.