IT Systems Administrator III

Centurion Health • Sterling, VA

3d • Onsite

About The Position

Centurion is seeking a full-time Systems Administrator III to join its IT team in Sterling, Virginia. The role provides infrastructure and operational support across enterprise technologies, including Active Directory, Exchange, Microsoft Azure, VMware, networking, file and print services, corporate applications, and other IT systems. The administrator uses infrastructure tools and established practices to monitor, administer, troubleshoot, and maintain systems, and to resolve operational requests, incidents, and service disruptions. The position serves as a Tier 3 escalation point for complex technical issues and works with IT Engineering, Security, and other IT teams to resolve them. It participates in an on-call rotation and provides after-hours support for critical infrastructure incidents as required. The position is based at the corporate office in Sterling, Virginia, with approximately 5–20% travel based on business and operational needs.

Requirements

• Bachelor’s degree in Information Technology or a related field preferred; equivalent hands-on experience will be considered.
• Five or more years of experience in a corporate IT operations environment strongly preferred, including hybrid or cloud-based environments.
• Strong understanding of the Microsoft technology stack, including Windows Server, Active Directory, IIS, Group Policy, NTFS/DFS, and enterprise tools such as SCCM, PRTG, PowerShell, Wireshark, PuTTY, and Dell OpenManage.
• Experience supporting current Windows operating systems and the Microsoft 365/Office suite.
• Strong understanding of SCCM/MECM for operating system image deployment, patch management, vulnerability remediation, and compliance reporting.
• Hands-on experience with virtualization technologies, including VMware ESXi, SAN infrastructure, and Veeam Backup & Replication.
• Solid understanding of networking fundamentals, including TCP/IP, DNS, VPN, wireless, and switching.
• Experience using diagnostic and monitoring tools, including application logs, system event logs, and Azure Monitor/Log Analytics.
• Working knowledge of ITIL-based change management processes and procedures.
• Strong scripting and automation skills using PowerShell.

Nice To Haves

• CompTIA Network+, CompTIA Security+, VMware VCA, Cisco CCNA, Microsoft MCSA or equivalent, or Microsoft Azure certifications such as AZ-104 or AZ-900.
• Experience with enterprise applications including Citrix, SharePoint, Paycom, the Barracuda suite, and Freshservice.
• Experience with Microsoft Azure services, including Azure Virtual Machines, Azure Active Directory (Entra ID), Azure Networking (VNets, NSGs, VPN/ExpressRoute), Azure Storage, or Azure CLI/PowerShell.
• Familiarity with SharePoint Online and hybrid integrations.
• Exposure to Azure Site Recovery and Azure Backup.
• Experience with Cisco Meraki and Azure networking concepts.
• Additional experience with Python or Azure automation, including Runbooks and Logic Apps.
• Experience supporting or integrating with EHR/EMR systems.

Responsibilities

• Monitor infrastructure daily, including network systems, physical and virtual servers, appliances, storage, backup systems, and other critical components.
• Provide day-to-day support for endpoints and infrastructure components, including core devices, file storage, print services, and backup systems.
• Triage, prioritize, and resolve Tier 3 incidents and service requests, escalating complex issues according to established procedures.
• Configure, maintain, test, and document Systems Administration applications and supporting infrastructure.
• Create and maintain knowledge base articles and document incidents and work requests according to departmental procedures.
• Maintain system documentation, provide status updates, and create and update technical procedures and support documentation.
• Use the ticketing system to document and manage incidents, service requests, problems, and change requests.
• Follow established technical procedures, standards, and Standard Operating Procedures for routine and complex administrative tasks.
• Review and evaluate new technologies and recommend potential uses within IT, corporate operations, and the organization.
• Participate in a scheduled on-call rotation, providing after-hours support for infrastructure incidents and service disruptions, including evenings, weekends, and holidays as required.
• Support scheduled after-hours maintenance, system upgrades, patching, and infrastructure changes.
• Travel approximately 5–20% based on business and operational needs, and maintain flexibility to work evenings, weekends, and holidays as required.
• Perform other duties as assigned.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior