System Administrator - TS/SCI Clearance

CDW•Washington, DC

1d•$145,000 - $175,000

About The Position

The System Administrator supports the daily administration, maintenance, troubleshooting, and security of Windows-based systems in a secure federal environment. The role is suited to an administrator with hands-on enterprise infrastructure experience who can work independently and under senior technical staff guidance. An active TS/SCI clearance is required, along with a strong understanding of Windows system operations, user support, patching, documentation, and secure configuration practices.

Requirements

Active TS/SCI clearance at the time of hire.
U.S. citizenship due to federal contract and clearance requirements.
At least 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.
Ability to follow change management, security, documentation, and operational procedures in a secure environment.
Strong customer service, troubleshooting, communication, and documentation skills.
Ability to work collaboratively with senior administrators, cybersecurity teams, network teams, and end users.

Nice To Haves

DoD 8570/8140 IAT Level II certification, such as Security+ CE, or the ability to obtain or maintain the required compliance certification.
Experience supporting VMware, Hyper-V, or other virtualized server environments.
Familiarity with DISA STIGs, vulnerability scanning tools, secure configuration standards, and remediation workflows.
Experience using PowerShell for basic administration, reporting, or automation tasks.
Exposure to Microsoft Endpoint Configuration Manager, SCCM, MECM, WSUS, or similar patching and deployment tools.
Basic understanding of backup and recovery processes, file services, print services, and enterprise monitoring tools.

Responsibilities

Administer and support Windows Server and Windows desktop systems across secure enterprise environments.
Create, modify, and maintain Active Directory user accounts, groups, permissions, organizational units, and access controls.
Apply approved system patches, updates, and configuration changes according to 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 administrators or engineering teams.
Troubleshoot common hardware, software, operating system, authentication, and connectivity issues.
Support vulnerability remediation by reviewing scan findings, applying fixes, and documenting remediation status.
Maintain technical documentation, including system configurations, troubleshooting steps, inventory records, and standard operating procedures.
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.