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Host Based Security System Administrator (TS/SCI)

Leidos | Newport News, United States | Posted June 15, 2026

Position Overview

**Description**

Mission One: Land The Job. Mission Two: Outdo What's Next. Come #OutsmartOutdo at **Leidos** !

**Leidos** is seeking an experienced a TS/SCI cleared **Host-Based Security System (HBSS) Administrator** to support the management, configuration, and maintenance of endpoint security infrastructure across Department of Defense (DoD) and federal government networks. The ideal candidate brings hands-on experience with McAfee ePolicy Orchestrator (ePO) and the Trellix Security Platform Suite and operates comfortably within a compliance-driven environment governed by DoD standards. **The position requires to perform job duties onsite at Langley Air Force base, VA.**

**Roles and Responsibilities**

+ Manage, deploy, and maintain HBSS/Trellix endpoint protection technologies across enterprise networks to monitor, detect, and respond to security events.
+ Configure and fine-tune HBSS modules including Host Intrusion Prevention System (HIPS...

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