System Administrator

System Administrator

Level II–III | Colorado Springs, CO | Active DoD Secret Clearance Required

Support and secure the mission environments behind one of the nation's most critical deep-space radar systems—where Linux expertise directly enables global defense operations.A Day in the Life – What You'll Do

• Serve as a Linux System Administrator supporting enterprise classified networks
• Provision, integrate, and maintain Red Hat–based systems supporting development and mission environments
• Implement and manage HPE High Performance Computing (HPC) clusters
• Diagnose system issues, execute corrective actions, and support continuous system reliability
• Perform system upgrades, patching, monitoring, and configuration management
• Manage user accounts, permissions, and security access controls
• Collaborate with cybersecurity, hardware, software, and systems engineering teams
• Communicate technical information clearly to stakeholders at all organizational levels

Required Qualifications

Citizenship & Clearance

• U.S. Citizenship required
• Active DoD Secret clearance at time of application

Education & Experience

Level II

• Bachelor's degree with 2+ years of experience
• OR Master's degree with 0 years of experience
• OR 6+ years of total experience in lieu of degree

Level III

• Bachelor's degree with 5+ years of experience
• OR Master's degree with 3+ years of experience
• OR 9+ years of total experience in lieu of degree

Certifications

• IAT Level II certification or higher (e.g., Security+ CE)

Linux & Systems Administration

• Experience administering Red Hat Enterprise Linux 8/9
• Experience with Ansible automation
• Experience with Red Hat Identity Manager (IDM)
• Experience with Red Hat Satellite Server configuration and management
• Experience creating and maintaining user and computer accounts
• Experience managing file permissions and security access lists
• Experience testing new product releases for compatibility and user impact

Travel

• Ability and willingness to travel up to 25% (CONUS and/or OCONUS)

Preferred Qualifications

• Active DoD Top Secret clearance with ability to obtain SCI
• Experience managing HPE High Performance Computing (HPC) clusters (e.g., HPE CM)
• Experience with MPI implementations (IntelMPI, OpenMPI, MPICH)
• Experience with InfiniBand networks and protocols
• Experience with NVIDIA CUDA libraries and GPU environments
• Experience with job schedulers such as Slurm or PBS
• Experience with global and parallel file systems (e.g., GPFS)
• Experience with Data Diode or Cross Domain Solution (CDS) technologies
• Experience with Agile methodologies and Atlassian tools (JIRA, Confluence)
• Experience with Cameo or similar Model-Based Systems Engineering (MBSE) tools

Who is Caribou Thunder?

Caribou Thunder is a HUBZone-certified small business providing advanced technical and engineering services to the U.S. Department of War and its mission partners.

Operating across 35+ states and 20+ countries, we've delivered trusted solutions for over two decades—strengthening national readiness across missions on land, undersea, in the air, and throughout LEO, MEO, GEO, and deep space.Why Caribou Thunder?

TEAM THUNDER — Mission Focused. Delivery Proven. Ready to Serve.

Employee Advocacy

Mission Proven

Global Reach

Skilled Teams

Modern Tools

Empowering Culture

Our engineers and technologists ensure capability from sea floor to space frontier—delivering secure, compliant, and resilient systems in high-consequence environments.

We specialize in Engineering Services, Cybersecurity, Software Development, Modeling & Simulation, Digital Engineering, and Artificial Intelligence.Employee Advocacy + Benefits

Our people are the heart of Caribou Thunder. We invest in their growth, flexibility, and well-being—because mission success starts with empowered professionals.

Benefits include:

• Premium Health, Dental & Vision Insurance
• 401(k) with 6% Company Match
• Flexible PTO & Work Schedule
• Education & Certification Reimbursement
• Support for Military Leave
• Work–Life Balance & Traditional Family Values

Your future, your flexibility, your well-being—we invest in you. Apply and let's connect.