Job Title: Systems Engineer/Administrator LeadJob Category: Information TechnologyTime Type: Full timeMinimum Clearance Required to Start: TS/SCI with PolygraphEmployee Type: RegularPercentage of Travel Required: Up to 10%Type of Travel: Continental US* * *The Opportunity:CACI is seeking a Classified Systems Engineer\Administrator to support and maintain mission-critical classified information systems within a secure environment. This position combines systems administration, systems engineering and will be the site lead for Danbury, CT.The ideal candidate will bring hands-on experience administering Microsoft Windows Server infrastructure, virtualization technologies, enterprise applications, storage platforms, identity and access management, and cybersecurity tools. This individual will work across technical and security teams to maintain system performance, address vulnerabilities, support configuration changes, and ensure classified systems operate in accordance with applicable DoD, DCSA, and NISPOM requirements.Responsibilities:Install, configure, administer, maintain, and troubleshoot Microsoft Windows Server and Linux operating systems across classified environments. Manage virtualization platforms, including VMware, Microsoft Hyper-V, and Nutanix, ensuring system availability, performance, scalability, and security.Administer enterprise services and applications, including Microsoft Exchange and Microsoft SQL Server.Troubleshoot and resolve complex hardware, software, networking, operating system, application, and infrastructure issues across multiple classified networks.Manage enterprise storage platforms, including Pure Storage, Dell PowerVault, and Synology appliances.Administer Microsoft Active Directory, including classified user account provisioning, access modifications, permissions, Group Policy, DNS, and DHCP in accordance with applicable security requirements.Maintain accurate inventory, configuration, and accountability records for classified IT a
