Windows Cybersecurity Systems Administrator

COLSA Corporation; Huntsville (AL); On-site; USD 90,000 - 130,000; Full time

Job summary

COLSA Corporation is seeking a Windows Systems Administrator to support the U.S. Army Materiel Command in Huntsville, Alabama.

This role provides hands-on systems administration for Windows-based server environments supporting mission-critical Army operations, with travel to operational sites as needed. The candidate will manage AD/Group Policy, patching, STIG compliance, vulnerability remediation, and virtualization (VMware/Hyper-V) while coordinating with site personnel and Test Lab teams for

Qualifications

• Bachelor’s degree in information technology, cyber, or a related technical discipline.
• Minimum of eight years of experience in Windows systems administration or infrastructure support.
• Active Secret security clearance; U.S. Citizenship required.
• Security+ certification (or equivalent/higher) and CE certification.
• On-site work in Huntsville, AL with CONUS travel 10–15%.
• Experience administering Windows Server environments and AD/GP management with patching and STIG compliance.

Responsibilities

• Administer, monitor, and maintain enterprise Windows Server environments across domain-joined, workgroup, and air-gapped networks.
• Install, test, and validate Windows Server patches, updates, and configuration changes.
• Apply security updates and configurations to SQL Server environments.
• Implement and maintain DISA STIG compliance across systems.
• Review vulnerability scans, perform remediation, and support vulnerability management.
• Utilize ACAS/SCAP/STIG Viewer and related tools for compliance checks.
• Monitor backups, perform validation, recovery activities, and coordinate with sites for patches.
• Support Windows-based application workstations and infrastructure; coordinate with Test Lab personnel for production deployments.
• Maintain system documentation, configuration records, vulnerability status, and compliance documentation.
• Troubleshoot OS, server, virtualization, and connectivity issues; support VMware and Hyper-V environments.

Skills

Active Directory

Group Policy

User access management

Windows domain services

Patch management

DISA STIG compliance

ACAS / SCAP / STIG Viewer

VMware

Hyper-V

SQL Server administration

Vulnerability remediation

Education

Bachelor’s degree in information technology or related field

Tools

ACAS

SCAP

STIG Viewer

VMware vSphere/ESXi

Microsoft Hyper-V

Microsoft SQL Server

Job description

COLSA is seeking a Windows Systems Administrator to support the U.S. Army Materiel Command in Huntsville, Alabama. This position will provide hands-on systems administration and technical support for Windows-based server environments supporting mission-critical Army operations. This role may require approximately 10 to 15 percent CONUS travel to support operational sites and system deployments.

Principal Duties and Responsibilities

• Administer, monitor, and maintain enterprise physical and virtual Microsoft Windows Server environments across domain-joined, workgroup, and isolated (air-gapped) network environments
• Install, test, and validate Windows Server security patches, updates, and system configuration changes
• Apply required security updates and configurations to systems supporting Microsoft SQL Server environments
• Implement and maintain compliance with applicable DISA Security Technical Implementation Guide (STIG) requirements
• Review vulnerability scan results, perform remediation activities, and support vulnerability management efforts
• Utilize vulnerability assessment and compliance tools such as ACAS, SCAP, STIG Viewer, and similar tools
• Monitor system backup operations and support backup validation, restoration, and recovery activities
• Coordinate with site personnel to ensure required patches, security updates, and configuration changes are implemented
• Support Windows-based application workstations and related infrastructure as required
• Coordinate with external Test Lab personnel to validate system configurations prior to production deployment
• Perform on-site server maintenance, patching, troubleshooting, configuration changes, and security remediation activities
• Maintain system documentation, configuration records, vulnerability status reports, and compliance documentation
• Troubleshoot Windows operating system, server, application, virtualization, and connectivity issues
• Support virtualized environments utilizing VMware, Microsoft Hyper-V, or similar technologies

At COLSA, people are our most valuable resource and centered at our core value. We invite you to unite your talents with opportunity and be a part of our “Family of Professionals!” Learn about our employee-centric culture and benefits here: https://www.colsa.com/culture_benefits

Required Experience

• Bachelor’s degree in information technology, cyber, or related technical discipline
• Minimum of eight years of related experience in Windows systems administration or infrastructure support
• Security+ certification (or equivalent/higher)
• Applicable Computing Environment (CE) certification
• Active Secret security clearance; U.S. Citizenship required
• Ability to work on site in Huntsville, AL, with CONUS travel approximately 10 to 15 percent
• Demonstrated experience administering and maintaining Microsoft Windows Server environments
• Proficiency with Active Directory, Group Policy, user access management, permissions, and Windows domain services
• Experience managing physical and virtual server environments
• Experience applying system patches, security updates, and DISA STIG compliance requirements
• Experience reviewing and remediating system vulnerabilities using ACAS, SCAP, or similar tools
• Experience supporting virtualized environments utilizing VMware, Microsoft Hyper-V, or comparable technologies

Preferred Qualifications

• Master’s degree in a related technical discipline
• Knowledge of Army enterprise IT operations, cybersecurity requirements, management practices, and operational support procedures
• Experience supporting Army installation-level IT operations, including Network Enterprise Center (NEC) or Regional Cyber Center (RCC) environments
• Experience supporting DoD Risk Management Framework (RMF) processes and cybersecurity authorization requirements
• Advanced experience administering Windows Server environments
• Experience designing, configuring, or troubleshooting enterprise virtualization environments utilizing VMware vSphere/ESXi or Microsoft Hyper-V
• Experience supporting Microsoft SQL Server environments, including patching, configuration, and troubleshooting

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.