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# System Administrator

- **Company:** Anonymous Employer
- **Location:** San Antonio, TX, United States
- **Experience:** Expert
- **Salary:** $90,000.0 - $130,000.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Access, Microsoft Windows, Active Directory, Cyber Security, System Configuration, Dynamic Host Configuration Protocol, Domain Name System (DNS), Monitoring of Systems, System Center Configuration Manager, Windows Servers, Red Hat Enterprise Linux, Software Requirements Analysis, Utility Software, Software Vulnerability Management, Computer Networking Systems, Information Technology, Performance Monitor, Patch Management, Wsus, Server Operating Systems & Platforms
- **Published:** August 29, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9124162/system-administrator

## About the Role

* Active TS/SCI clearance or ability to obtain TS/SCI.
 * 7+ years of experience installing, configuring, administering, troubleshooting, and maintaining Microsoft Windows Server environments.
 * Experience designing, implementing, and supporting enterprise Windows infrastructure services including Active Directory, DNS, DHCP, MECM/SCCM, WSUS.
 * Experience supporting both physical and virtualized server environments within secure DoD or federal enterprise networks.
 * Experience with Windows Server hardening, patching, vulnerability remediation, and security compliance requirements.
 * Experience performing DISA STIG compliance reviews and remediation activities.
 * Strong understanding of system administration, performance monitoring, capacity planning, and enterprise infrastructure operations.
 * IAT level II certification
 * Microsoft Computing Certification Required (at least one of the following);
 * Microsoft 365 Certified: Endpoint Administrator Associate
 * Microsoft Certified: Information Security Administrator Associate
 * Microsoft 365 Certified: Enterprise Administrator Expert
 * Microsoft 365 Certified: Administrator Expert
 * Microsoft Certified: Identity and Access Administrator Associate
 * Microsoft Certified: Windows Server Hybrid Administrator Associate

## Description

* Install, configure, test, tune, maintain, harden, upgrade, patch, and support physical and virtual Microsoft Windows Server environments across classified and unclassified networks.
 * Design, implement, document, and maintain enterprise Windows Server infrastructure and supporting utility programs and monitoring tools.
 * Administer and support core Microsoft infrastructure services including:
 * Active Directory (AD), DNS, DHCP, Microsoft Endpoint Configuration Manager (MECM/SCCM), Windows Server Update Services (WSUS)
 * Monitor system performance, analyze hardware and software requirements, and recommend improvements to increase system efficiency, reliability, and availability.
 * Create and manage capacity planning, utilization, and trending reports for enterprise systems.
 * Perform day-to-day troubleshooting, maintenance, and support of Windows Server operating systems and associated infrastructure.
 * Conduct annual DISA STIG compliance reviews and remediation activities on Red Hat Enterprise Linux (RHEL) servers and installed software.
 * Support cybersecurity, vulnerability management, patch management, and system hardening initiatives in accordance with DoD and organizational security requirements.
 * Maintain accurate technical documentation, system configurations, diagrams, and operational procedures.
 * Coordinate with Information Technology Equipment Custodians (ITECs) and Property Custodians (PCs) by documenting accountable equipment moves within required timelines.
 * Ensure proper cable management practices by neatly bundling and concealing system and peripheral cabling during installations and maintenance activities.


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