SME Network & Computer Systems Administrator

Xenith Solutions is seeking a highly skilled SME Network & Computer Systems Administrator  to support DHS ICE Homeland Security Investigations (HSI) Title III and Linguists Unit (T3LU) under the CALEA program.

This role provides advanced technical leadership and mission-critical support for secure law-enforcement systems operating 24 / 7 across multiple locations.

The SME Administrator will manage and troubleshoot enterprise networks, servers, virtual environments, and security configurations while collaborating on the design and maintenance of the CALEA Continuity of Operations (COOP)  site in Lorton, VA.

A shared responsibility among government, and vendor partners.

Responsibilities Install, configure, administer, and maintain CALEA LAN / WAN infrastructure, servers, SANs, and network devices.

Administer Active Directory (AD) , including :

• Promoting / demoting domain controllers
• Troubleshooting DNS  and DHCP  issues
• Managing GPO hierarchy and execution
• Writing and maintaining PowerShell / Bash scripts  for automation
• Analyzing event logs and Windows system errors Plan, deploy, and maintain COOP and DR capabilities  in coordination with the Government and vendor partners, ensuring redundancy and failover readiness.
• Patch and update servers and workstations; ensure security baseline compliance with DHS and FISMA standards.

Apply and troubleshoot security hardening requirements and vulnerability remediation; support the ATO process and collaborate with the ISSO to resolve findings.

Administer virtualization and storage platforms, including :

Preferred Certifications :