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IT Infrastructure Security Specialist
Leidos
Suffolk, VAPosted Oct 15, 2026 · 19h ago$108K – $195K
$108K – $195KSenior levelDefense
About this role
Leidos is seeking an IT Infrastructure Security Specialist to safeguard enterprise information systems and infrastructure through mission-critical security operations. You will analyze security alerts, conduct vulnerability assessments, and implement security controls across various IT environments, including networks, servers, and cloud services. This role also involves coordinating physical security measures and ensuring compliance with all security policies and procedures.
What we are looking for
6- Analyze security alerts and investigate cyber/physical security incidents
- Conduct vulnerability assessments and risk evaluations
- Implement and maintain security controls for networks, servers, and cloud services
- Coordinate physical security measures including access control and surveillance
- Process and coordinate personnel security clearance investigations
- Requires an active Top Secret security clearance
Work authorization
Requires a Top Secret security clearance.
