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Tier 3 Level Systems Administration Support Services
Job in
San Antonio, Bexar County, Texas, 78208, USA
Listed on 2026-01-06
Listing for:
A1FED Inc
Full Time
position Listed on 2026-01-06
Job specializations:
-
IT/Tech
Cybersecurity, IT Support
Job Description & How to Apply Below
Clearance Required: Public Trust (ADP/IT-II) via Tier 3 federal Background Investigation (NACLC)
The Tier 3 Systems Administrator provides senior-level enterprise administration and engineering support across hybrid cloud and on-premise environments within the Military Health System. This role is responsible for maintaining, optimizing, and troubleshooting enterprise-scale services, including Active Directory (AD), Microsoft Entra (Azure AD), enterprise monitoring systems, and encrypted data platforms. The administrator ensures continuity of service, compliance, and security for critical directory, authentication, and communication tools throughout the enterprise.
Key Responsibilities
- Manage and sustain enterprise services such as Active Directory, Microsoft Entra , System Center Operations Manager (SCOM), and the Quest tool suite to ensure availability and scalability across the DHA enterprise.
- Implement schema extensions, GPO administration, domain trust management, and OU configuration using Quest and related tools.
- Provide advanced support and optimization for DHA's MED
365 Azure Cloud environment, including eDiscovery and Exchange Online. - Ensure authentication, synchronization, user provisioning, and encryption compliance across AD and cloud-based systems.
- Monitor data encryption services; create, upgrade, and deploy encryption clients, and ensure systems comply with DHA/DoD encryption standards.
- Customize enterprise monitoring rules and produce performance metrics (uptime, downtime) using SCOM and related monitoring platforms.
- Develop and test disaster recovery procedures; ensure STIG compliance for all monitoring infrastructure.
- Support PKI/PKE integration and compliance per DoDI 8520.02.
- Manage enterprise Exchange Online services (mail flow, distribution lists, shared mailboxes, migrations, and uptime).
- Administer eDiscovery functions including data collection, analysis, and response to legal/regulatory requests; handle incidents related to data leakage, phishing, and unauthorized exposure.
- Microsoft SCOM, Entra , AD, Quest Tools, Exchange Online, eDiscovery, Azure Cloud
- Power Shell, Windows Server OS, Microsoft 365 / MED
365, Encryption platforms (e.g., Bit Locker)
1)
Microsoft Certified: Azure Administrator Associate or Windows Server Hybrid Administrator Associate
2) Any of the following...
- Academic
Education:
Bachelor's degree in information technology, Cybersecurity, or a related discipline. - OR Baseline:
Cloud+, or GICSP, or SSCP, or Security+ or GSEC, or GLSC, or CISSP - OR DoD/Military Training: F07DZ
Z1 or M03385G or M10395B or M223854 or A-150-0045 (now W-250-0750) or A-531-0021 or W-250-0750 or A-150-3400 now W-250-0750 or A-150-1980 or A-150-1202 or A-150-1203 or A-150-1250 or A-150-1855 / A-150-1940 or A-113-0205 or A-113-0175 or A-113-0018 or A-113-0382 or A-113-0027 or A-113-0383 or A-113-0175 or A-113-0202 or A-113-0233 or DISA-US1379
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