Enterprise Windows Domain and Server Administrator (Senior)

COLSA Corporation•Huntsville, AL

12d

About The Position

COLSA is seeking a Senior Windows Server System Analyst to support Enterprise IT Support Services at the Army Aviation and Missile Center (AvMC) at Redstone Arsenal in Huntsville, Alabama. As part of the Systems Operations team, the role supports administration of enterprise infrastructure, primarily Active Directory Domain Services (AD DS), DHCP, DNS, and PKI. The position also covers operating system and application patch management, software license management, security compliance remediation, and advanced Tier 3 technical support. Experience with Windows IIS, Microsoft SQL Server, and PowerShell automation is strongly desired. The administrator sustains multiple generations of Windows Server on virtual and physical servers, including routine updates and configuration changes aligned with DISA STIG requirements. The role coordinates with other technical support teams, follows change management processes, handles work requests through the Service Desk Management tool, and prepares operational and engineering status documentation for management. The position also prepares system design specifications to meet customer requirements and implements specifications developed by others.

Nice To Haves

Experience managing Windows Internet Information Services (IIS).
Experience managing Microsoft SQL Server.
Experience with administrative automation through PowerShell scripting.

Responsibilities

Administer, maintain, and troubleshoot Active Directory Domain Services, including user and computer accounts, security groups, organizational units, and Group Policy Objects.
Monitor and troubleshoot domain controllers, replication, authentication, directory synchronization, domain trust relationships, Active Directory sites and subnets, and replication topology.
Maintain enterprise DNS and DHCP services, including secure configuration of lookup zones, dynamic update policies, and resource records.
Troubleshoot DNS resolution failures, zone replication issues, record conflicts, and network connectivity problems related to DHCP and TCP/IP.
Monitor DNS and DHCP availability, performance, and security, and implement corrective actions.
Sustain Windows Server platforms across virtual and physical servers, including monthly operating system and application updates and at least quarterly configuration updates in accordance with DISA STIG requirements.
Develop plans and schedules to mitigate cybersecurity findings and follow up on mitigation progress.
Develop or improve PowerShell scripts to increase server administration efficiency.
Coordinate and work with Virtualization Infrastructure, Network Operations, SQL & IIS, Data Storage & Archival, Software Development, and Cybersecurity teams.
Fulfill work requests and resolve issues tracked through the Service Desk Management tool, including providing Tier 3 technical support.
Assist with enterprise print and software license services.
Develop weekly and monthly operational and engineering support status documents for management situational awareness.
Coordinate changes with other support teams and use existing change management processes.
Prepare system design specifications to meet customer requirements and implement system design specifications prepared by others.