System Administrator

Job Description Description SAIC is seeking a skilled and motivated System Administrator in Colorado Springs, CO to join our team and play a key role in managing and advancing our IT infrastructure within a Department of Defense (DoD) environment. In this role, you will be responsible for maintaining robust, secure, and high-performing systems that support mission-critical operations. The ideal candidate brings hands-on experience with enterprise virtualization platforms (Nutanix, VMware, and/or Proxmox), Windows Server administration, and a working knowledge of DoD security compliance standards. You are someone who takes ownership, communicates clearly across teams, and thrives in a regulated, security-first environment. Responsibilities: Install, configure, and maintain Windows Server environments, including Active Directory, Group Policy, and user permissions management. Manage and optimize on-premises Type 1 hypervisor platforms (Nutanix, VMware, Proxmox) to ensure high availability and performance. Implement and maintain system security controls in accordance with DoD standards and applicable STIGs/RMF requirements. Monitor network performance, diagnose connectivity issues, and recommend improvements to infrastructure reliability. Manage system patching and update cycles to maintain compliance, reduce vulnerabilities, and minimize operational downtime. Administer and maintain backup and recovery technologies; conduct periodic validation of restore procedures. Create and maintain thorough documentation of system configurations, procedures, and security policies. Partner with cross-functional teams to evaluate, implement, and enhance system functionality and security posture. Stay current on emerging technologies, industry best practices, and evolving DoD compliance requirements. Qualifications Required Qualifications: High school diploma/GED with 8+ years of equivalent hands-on experience in a system administration role OR Bachelor's degree in Computer Science, Information Technology, or a related field with 5 years of relevant experience; Master and three years of more experience. Demonstrated experience as a System Administrator in a DoD or similarly regulated, security-conscious environment. Solid hands-on experience with VMware and/or other enterprise virtualization technologies. Strong proficiency in Windows Server administration, including Active Directory and Group Policy. Working knowledge of networking protocols, system security best practices, and IT infrastructure management. Proficient in Windows Server administration, patching, and update management. Experience with on-premises Type 1 hypervisors (Nutanix, VMware, Proxmox preferred). Familiarity with enterprise collaboration and project management tools. Understanding of DoD compliance frameworks, STIGs, and security hardening standards. Experience with enterprise backup/recovery platforms and documented DR procedures. Required Certifications: CompTIA Security+ (DoD 8570/8140 compliant). Active TS/SCI clearance. Preferred Certifications (not required): Microsoft Certified: Azure Administrator Associate. Nutanix Certified Professional or VMware Certified Professional (VCP). Cisco Certified Network Associate (CCNA). CompTIA Security X (Formerly CASP +). Target salary range: $60,001 - $100,000. The estimate displayed represents the typical salary range for this position based on experience and other factors. Overview SAIC accepts applications on an ongoing basis and there is no deadline. SAIC® is a premier mission integrator focused on advancing the power of technology and innovation to serve and protect our world. Our robust portfolio of offerings across the defense, space, intelligence, and civilian markets includes secure high-end solutions in mission IT, enterprise IT, engineering services, and professional services. We integrate emerging technology, rapidly and securely, into mission critical operations that modernize and enable critical national imperatives. We are approximately 23,000 strong; driven by mission, united by purpose, and inspired by opportunities. SAIC is an Equal Opportunity Employer. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $7.3 billion. For more information, visit saic.com. For ongoing news, please visit our newsroom. Science Applications International Corporation