System Administrator

The System Administrator administers Windows Server infrastructure supporting enterprise directory services, domain services, file services, and integrated identity, credential, and access-management capabilities in a regulated federal IT environment. The role maintains reliable, secure, and high-performing operation of distributed domain controllers, DNS, DHCP, file servers, and directory-integrated systems serving a large user population.

The System Administrator implements server hardening, patching, vulnerability remediation, monitoring, recovery, and automation activities in accordance with approved security baselines and operational procedures. This position collaborates with directory engineering, cybersecurity, and network teams to troubleshoot cross-platform infrastructure issues, sustain authentication and directory-service availability, and improve operational consistency through Power Shell-based administration and reporting.

• Administer Windows Server 2016, 2019, and 2022 environments supporting enterprise directory services, including server builds, configuration, roles and features, service management, local security policy, patching, performance monitoring, backup, recovery, storage, and technical troubleshooting.
• Manage Active Directory Domain Services infrastructure, including domain controllers, directory replication, organizational units, users and groups, Group Policy dependencies, directory-integrated applications, and authentication-related service dependencies.
• Administer Domain Name System services supporting enterprise directory operations, including Active Directory-integrated zones, forward and reverse lookup records, secure dynamic updates, zone replication, domain-controller DNS client configuration, and name-resolution troubleshooting.
• Administer DHCP services in distributed environments, including scopes, address reservations, exclusions, lease monitoring, DHCP options, failover considerations, and DHCP-to-DNS dynamic-update integration.
• Administer Windows file servers, including share and NTFS permissions, access-based security, capacity monitoring, quota management, audit settings, file-service availability, and resolution of user-access issues.
• Apply approved Windows Server, Active Directory, and DNS security configuration baselines, including Security Technical Implementation Guide requirements, secure configuration validation, remediation tracking, and documentation of approved exceptions or residual risk.
• Plan and execute server patching, updates, vulnerability remediation, and maintenance activities by performing dependency analysis, coordinating maintenance windows, preparing backups and rollback procedures, validating implementation results, and capturing required evidence.
• Monitor and troubleshoot server availability, processor and memory utilization, disk capacity and I/O, service status, directory replication, DNS health, authentication events, and network connectivity using native Windows tools and enterprise monitoring platforms.
• Develop and maintain Power Shell scripts for server inventory, configuration validation, Active Directory and DNS reporting, health checks, patch-status reporting, routine maintenance, bulk administrative tasks, and repeatable operational workflows.
• Collaborate with directory engineers, cybersecurity personnel, and network teams to diagnose infrastructure issues, assess operational impact, coordinate remediation, and sustain availability of mission-critical authentication and access services.

• High school diploma or equivalent and at least 4 years of experience administering Windows Server environments, enterprise infrastructure, or related systems-administration functions.
• Strong…