3rd-Shift Windows Server Admin — Security & VMware

Leidos LLC; San Antonio (TX); On-site; USD 59,000 - 107,000; Full time

Job summary

Leidos LLC in San Antonio, TX is seeking a Windows Systems Administrator for 3rd shift (9 PM–5 AM) to support the CESO program, migrating to a high-security cloud environment.

The role focuses on administering Windows Server, AD, DNS, DHCP, GPO, and VMware, with emphasis on security, disaster recovery, and routine automation via PowerShell.

On-site requirement and active TS/SCI clearance are stated; extensive experience with security standards and documentation is expected.

Qualifications

• Bachelor's degree in IT or related field.
• Active TS/SCI clearance required; CI Poly may be required in future.
• Experience with Windows Server, AD, DNS, DHCP, GPO.

Responsibilities

• Administer and maintain Windows Server environments across physical and virtual infrastructure.
• Manage Active Directory, DNS, DHCP, Group Policy, and Microsoft-based services.
• Perform server installation, configuration, upgrades, patching, and troubleshooting.
• Monitor server performance, availability, capacity, and health.
• Manage user accounts, permissions, security groups, and access controls.
• Support virtualization platforms such as VMware.
• Implement and maintain backup and disaster-recovery procedures.

Skills

Windows Server

Active Directory

PowerShell scripting

Docker/Kubernetes?

Education

Bachelor's degree

DoD 8750 IAT Level II (Security+ce)

Tools

VMware

BMC Remedy

Job description

Leidos LLC in San Antonio, TX is seeking a Windows Systems Administrator for 3rd shift (9 PM–5 AM) to support the CESO program, migrating to a high-security cloud environment.

The role focuses on administering Windows Server, AD, DNS, DHCP, GPO, and VMware, with emphasis on security, disaster recovery, and routine automation via PowerShell.

On-site requirement and active TS/SCI clearance are stated; extensive experience with security standards and documentation is expected.