Job Title: Infrastructure/Systems AdministrationJob Category: Information TechnologyTime Type: Full timeMinimum Clearance Required to Start: NoneEmployee Type: RegularPercentage of Travel Required: Up to 10%Type of Travel: Local* * *The Opportunity:CACI is seeking an Infrastructure/Systems Administrator to support a zero-trust research and development IT environment.The role supports a secure, compliant infrastructure integrating on-premises and cloud-based technologies across CACI programs.Provides hands-on administration and technical support across Linux, Windows, and macOS servers and workstations.Works collaboratively with Systems Administrators, engineers, and corporate IT teams to troubleshoot complex infrastructure issues and deliver reliable technical solutions.Contributes to continuous improvement, security hardening, compliance, documentation, and operational excellence.Responsibilities:Administer multi-OS environments including Red Hat, Ubuntu, Windows, and macOS across servers and workstations.Troubleshoot infrastructure issues involving servers, storage, networking, and security in remote and on-site environments.Perform patching, package management, and compliance activities using tools such as Red Hat Satellite, Landscape, Foreman, MECM, or similar technologies.Manage identity and access services, including authentication and privileged access management using Centrify or comparable PAM solutions.Support AWS, Azure, VMware, Nutanix, or similar cloud and virtualization platforms.Collaborate with engineering, security, and support teams to resolve complex cross-platform infrastructure issues.Support a zero-trust security posture through system hardening, encryption, device controls, and security best practices.Support NIST compliance and security requirements within the IT environment.Utilize Splunk and related monitoring/logging technologies for system visibility, troubleshooting, and operational support.Develop, maintain, and improve technical docume
