IT Systems Administrator III

Centurion is proud to be a leading provider of comprehensive healthcare services to correctional facilities, state hospitals, and community mental health centers nationwide.

We are currently seeking a full-time Systems Administrator III to join our IT team in Sterling, VA.The Systems Administrator III is responsible for providing infrastructure and operational support across a broad range of enterprise technologies, including Active Directory, Exchange, Microsoft Azure, VMware, networking, file and print services, corporate applications, and other IT systems. Utilize infrastructure tools and established best practices to monitor, administer, troubleshoot, and maintain systems while efficiently resolving operational requests, incidents, and service disruptions.

Serve as a Tier 3 escalation point for complex technical issues, working collaboratively with IT Engineering, Security, and other IT teams to troubleshoot and resolve issues in a timely manner. Participate in the on-call rotation and provide after-hours support for critical infrastructure incidents as required.

Performs daily monitoring of infrastructure, including network systems, physical and virtual servers, appliances, storage, backup systems, and other critical infrastructure components.

Provides day-to-day support of endpoints and infrastructure components, including maintaining core devices, file storage, print services, backup systems, and related technologies.

Triages, prioritizes, and resolves Tier 3 incidents and service requests, escalating complex issues in accordance with established escalation procedures.

Configures, maintains, tests, and documents Systems Administration applications and supporting infrastructure. Creates and maintains knowledge base articles and documents incidents and work requests in accordance with departmental procedures.

Maintains system documentation, provides status updates, and creates and updates technical procedures and support documentation. Utilizes the ticketing system to document and manage incidents, service requests, problems, and change requests.

Follows established technical procedures, standards, and Standard Operating Procedures (SOPs) for both routine and complex administrative tasks.

Reviews and evaluates new technologies and provides recommendations regarding their potential use within IT, corporate operations, and the organization.

Participates in a scheduled on-call rotation to provide after-hours support for infrastructure-related incidents and service disruptions, including evenings, weekends, and holidays as required.

Supports scheduled after-hours maintenance, system upgrades, patching, and infrastructure changes as needed.

Willing and able to travel approximately 5–20%, based on business and operational needs.

Maintains flexibility to work evenings, weekends, and holidays as required to support operational needs, planned maintenance, and critical incidents.

Performs other duties as assigned.

Bachelor’s degree in Information Technology or a related field preferred; equivalent hands-on experience will be considered.
5+ years of experience in a corporate IT operations environment strongly preferred, including hybrid or cloud-based environments.

Preferred

Certifications:

CompTIA Network+, CompTIA Security+, VMware VCA, Cisco CCNA, Microsoft MCSA (or equivalent), and Microsoft Azure certifications such as AZ-104 (Azure Administrator Associate), or AZ-900 (Azure Fundamentals).Strong understanding of the Microsoft technology stack, including Windows Server, Active Directory, IIS, Group Policy (GPO), NTFS/DFS, along with enterprise tools such as SCCM, PRTG, Power Shell, Wireshark, PuTTY, and Dell Open Manage.

Experience with enterprise applications including Citrix, SharePoint, Paycom,…