TS/SCI System Administrator - Windows & AD Expert

CDW; Washington; On-site; USD 145,000 - 175,000; Full time

Benefits offered by this job

CDW Benefits

Job summary

CDW is seeking a System Administrator to support daily administration, maintenance, and security of Windows-based systems in a secure federal environment. The role requires hands-on experience with enterprise infrastructure and TS/SCI clearance.

You will manage Active Directory, apply patches, assist with Group Policy, monitor health, and coordinate with cybersecurity, network, and engineering teams. DoD 8570/8140 IAT Level II certification is a plus.

Qualifications

• Active TS/SCI clearance is required at the time of hire.
• U.S. citizenship is required due to federal contract and clearance requirements.
• 4+ years of relevant experience in systems administration, desktop/server support, or enterprise IT operations.
• Hands‑on experience supporting Microsoft Windows Server and Windows desktop environments.
• Working knowledge of Active Directory, Group Policy, DNS, DHCP, user permissions, and basic enterprise authentication concepts.
• Experience performing system patching, software installation, troubleshooting, and routine maintenance activities.

Responsibilities

• Administer and support Windows Server and Windows desktop systems across secure enterprise environments.
• Create, modify, and maintain user accounts, groups, permissions, organizational units, and access controls within Active Directory.
• Apply approved system patches, updates, and configuration changes in accordance with established maintenance procedures.
• Assist with Group Policy management, workstation configuration, software installation, and system baseline maintenance.
• Monitor system health, review logs, respond to alerts, and escalate complex issues to senior staff as appropriate.
• Perform troubleshooting for common hardware, software, operating system, authentication, and connectivity issues.
• Support vulnerability remediation activities, including reviewing scan findings, applying fixes, and documenting remediation status.
• Maintain accurate technical documentation, including system configurations, troubleshooting steps, inventory records, and SOPs.
• Assist with backups, restore testing, account audits, system checks, and routine operational tasks.
• Coordinate with help desk, cybersecurity, network, and engineering teams to support reliable and secure system operations.

Skills

TS/SCI clearance

Windows Server

PowerShell

Active Directory

Documentation

Tools

VMware

Hyper‑V

SCCM/MECM/WSUS

Job description

CDW is seeking a System Administrator to support daily administration, maintenance, and security of Windows-based systems in a secure federal environment. The role requires hands-on experience with enterprise infrastructure and TS/SCI clearance.

You will manage Active Directory, apply patches, assist with Group Policy, monitor health, and coordinate with cybersecurity, network, and engineering teams. DoD 8570/8140 IAT Level II certification is a plus.