Senior Windows & Enterprise Systems Administrator

CO1002 CDW Government, LLC; Washington (District of Columbia); On-site; USD 175,000 - 220,000; Full time

Job summary

CDW seeks a senior Windows systems professional to administer enterprise Windows Server and desktop environments within classified networks. You will manage Active Directory, DNS, DHCP, and group policy, while ensuring patching, hardening, and STIG compliance. Applicants must hold TS/SCI clearance and U.S.

citizenship. The role involves working with VMware/Hyper‑V/Nutanix, SCCM/MECM, and automation via PowerShell, with opportunities to mentor junior staff and collaborate across cybersecurity,

Qualifications

• Active TS/SCI clearance required at time of hire.
• U.S. citizenship required due to federal contract.
• Strong Windows Server and Windows workstation administration experience.
• Experience with AD, GPO, DNS, DHCP, domain services, and enterprise authentication.
• Knowledge of patching, hardening, and secure baselines; change control practices.

Responsibilities

• Administer, maintain, and troubleshoot Windows Server and Windows desktops.
• Manage AD, GPOs, DNS, DHCP, and domain controllers.
• Perform monitoring, patching, vulnerability remediation, and root cause analysis.
• Install, configure, and support OSes, apps, servers, and virtualization.
• Develop procedures for builds, deployments, and maintenance.
• Ensure compliance with security standards and STIGs.
• Provide Tier II/III incident support for servers, apps, and services.
• Use PowerShell to automate tasks and reporting.
• Coordinate with cybersecurity, network, and help desk teams.
• Mentor junior admins on troubleshooting and best practices.

Skills

Active TS/SCI clearance

U.S. citizenship

Windows Server administration

Strong communication skills

Mentor junior staff

Education

DoD 8570/8140 IAT II certification (Security+ CE)

Tools

VMware

Hyper‑V

Nutanix

SCCM / MECM

PDQ Deploy

ACAS/Nessus

Job description

CDW seeks a senior Windows systems professional to administer enterprise Windows Server and desktop environments within classified networks. You will manage Active Directory, DNS, DHCP, and group policy, while ensuring patching, hardening, and STIG compliance. Applicants must hold TS/SCI clearance and U.S.

citizenship. The role involves working with VMware/Hyper‑V/Nutanix, SCCM/MECM, and automation via PowerShell, with opportunities to mentor junior staff and collaborate across cybersecurity,