**Description**

Leidos Corporate Information Security Office (CISO), reporting through the Digital sector, is seeking a **Linux and Windows System Administrator** to support and maintain complex classified environments. The selected candidate will be responsible for administering, securing, troubleshooting, and maintaining Windows and Linux systems across physical and virtual infrastructures. This role supports mission-critical operations by ensuring system availability, compliance with security requirements, and reliable day-to-day operations within a secure enterprise environment.

**Location:** All work will be performed onsite in our Beavercreek, OH office.

**Clearance:** You must **currently carry an active DoD Secret clearance** to qualify for consideration.

**Primary Responsibilities**

+ Administer and maintain **Windows Workstations, Windows Server, and Linux systems** ( **RHEL, Rocky Linux, Ubuntu** ) across physical, virtual,...