Windows Systems Administrator (MSIC)

COLSA Corporation is seeking a Windows Systems Administrator to support the Missile and Space Intelligence Center (MSIC) in Huntsville, Alabama. This on-site role involves administering, maintaining, and securing a highly virtualized IT environment, including Windows Server systems, Nutanix hyperconverged infrastructure (HCI), virtual desktop infrastructure (VDI), and high-performance computing (HPC) systems. The selected candidate will help ensure these systems remain secure, reliable, and operating efficiently to support mission requirements.

• Design: Architect, deploy, and maintain robust Windows Server and Workstation environments running primarily on Nutanix HCI, managing hypervisor resources, storage containers, and bare-metal systems.

• Administer enterprise-scale Windows Virtual Desktop Infrastructure (VDI) and specialized Windows-based high-performance computing (HPC) environments to support complex analyst workflows.

• Execute rigorous STIG compliance, OS/application patching, and continuous vulnerability management across isolated networks to maintain a zero-friction ATO posture.

• Provide end-to-end technical support, system troubleshooting, active directory management, and user environment management for the enclave’s user base.

• Architect the infrastructure of tomorrow, streamline administrative automation, and evaluate next-generation hardware and software solutions for site refreshes.

At COLSA, people are our most valuable resource and are at the center of our core values. We invite you to unite your talents with opportunity and become part of our “Family of Professionals!” Learn more about our employee-centric culture and benefits here: https://colsa.com/culture\_benefits

Required SkillsRequired Experience

Required Qualifications

• Associate’s degree (or higher) in information technology or a related field, or equivalent experience.

• Minimum of 0–12 years of related experience; position may be filled at varying levels based on experience

• Must possess an active CompTIA Security+ CE, ISC2 SSCP, or equivalent baseline certification.

• Must be able to lift and move equipment weighing up to 50 pounds and perform physical tasks associated with data center operations, including installing equipment in racks, routing cables, standing, bending, and kneeling, with or without reasonable accommodation.

• Strong grasp of TCP/IP, DNS, and Firewall requirements essential for AD communication across segmented networks.

• Understanding of GPO implementation, user and group management, and permissions.

• Demonstrated hands-on experience designing,

• Expertise in Windows Server (2016–2022/2025) and Windows 10/11 Enterprise administration.

• U.S. Citizenship required; Must possess an active DoD Top Secret clearance with SCI eligibility. Must be able to successfully complete a Counterintelligence (CI) Polygraph and meet eligibility requirements for Special Access Programs (SAP).

Preferred Qualifications

• Bachelor’s degree in information technology or a related field.

• Active DoD Top Secret Clearance with SCI and a Counterintelligence (CI) Polygraph with willingness to meet Special Access Program (SAP) eligibility requirements.

• Possess active computing environment certification in Microsoft, Nutanix, or Linux.

• Expert at leveraging enterprise tools like Ansible, PowerShell SCCM, and WSUS to automate the deployment of security patches and configuration changes across workstations and servers.

• Advanced proficiency in PowerShell for automating bulk object changes, reporting, and environment health checks.

• Deep knowledge of STIG (Security Technical Implementation Guides) compliance.

• Prior experience building, optimizing, or supporting Windows-based High-Performance Computing (HPC) clusters or GPU-accelerated virtual environments for engineering/scientific workloads.

Applicant selected will be subject to a government security investigation and must meet eligibility requirements for access to classified information. COLSA Corporation is an Equal Opportunity Employer, Minorities/Females/Veterans/Disabled. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, or national origin.