System Administrator - TS/SCI Clearance

The System Administrator will support daily administration, maintenance, troubleshooting, and security of Windows-based systems in a secure federal environment. This role is ideal for an administrator with hands-on experience supporting enterprise infrastructure who can work both independently and under the guidance of senior technical staff. The position requires an active Top Secret/Sensitive Compartmented Information (TS/SCI) clearance and a strong understanding of Windows system operations, user support, patching, documentation, and secure configuration practices.

What You Will Do

• 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 administrators or engineering teams 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 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.

• 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.

• 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.

• DoD 8570/8140 IAT Level II certification, such as Security+ CE, or the ability to obtain/ maintain required compliance certification, is a plus.

• Experience supporting VMware, Hyper-V, or other virtualized server environments, is a plus.

• Familiarity with DISA STIGs, vulnerability scanning tools, secure configuration standards, and remediation workflows, is a plus.

• Experience using PowerShell for basic administration, reporting, or automation tasks, is a plus.

• Exposure to Microsoft Endpoint Configuration Manager, SCCM, MECM, WSUS, or similar patching and deployment tools, is a plus.

• Basic understanding of backup and recovery processes, file services, print services, and enterprise monitoring tools, is a plus., We’re looking for people who bring curiosity, a learner’s mindset, and a willingness to engage with ever-evolving technology and tools. We value adopting AI as a partner, openness to experimentation, and a shared interest in learning together on AI. Our goal is to create a culture where AI enhances-not replaces-human creativity and decision-making. You don’t need to be an expert today; what matters is your readiness to explore, adapt, and grow with us as we integrate AI responsibly and effectively into our work.

Pay range: $145,000 - $175,000 depending on experience and skill set.

CDW is a Fortune 500 technology solutions provider that helps businesses, government, education, and healthcare organizations achieve what’s possible through technology. What makes CDW different isn’t just what we do-it’s how we do it. At CDW we act as one-building trust, speaking candidly, and working together to achieve more. We play to win-focusing on what matters most and delivering for our customers. And we think forward-staying curious, moving fast, and continuously learning. We believe meaningful work happens when people feel supported, heard, and empowered to contribute. That’s why we think of ourselves as coworkers, not just employees-working together to solve complex challenges and deliver real impact for our customers and communities.

As a full-stack, full-lifecycle technology partner, CDW brings deep expertise, strong relationships, and broad industry knowledge to help turn ideas into outcomes. When you join CDW, you become part of a collaborative environment where your work matters, your growth is supported, and your contributions help shape what’s next.

Together, we deliver the full promise of what technology can do. Together, we Make Amazing Happen.

CDW is an equal opportunity employer. All qualified applicants will receive consideration for employment without regards to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status or any other basis prohibited by state and local law.