DoD ISSM - RMF/ATO Cybersecurity Lead

Leidos in Virginia is seeking an Information System Security Manager (ISSM) to oversee the cybersecurity posture of DoD information systems, develop and implement security policies, conduct RMF-based risk assessments, and manage ATO processes for cloud and on‑premise environments.

This on-site role requires TS/SCI or active clearance, DoD policy experience, and the ability to lead cross‑functional teams while delivering continuous monitoring, risk mitigation, and security documentation to meet