Linux Systems Administrator Jobs

Position Title: Linux Systems Administrator

Client: Defense Information Systems Agency (DISA)

Employment Type: Full-Time

Work Schedule: Hybrid (1–2 days onsite per week)

Security Clearance: Active DoD Secret Clearance Required

Locations:

• Oklahoma City, Oklahoma
• Mechanicsburg
• Ogden, Utah
• Montgomery, Alabama

Position Overview

We are seeking an experienced Linux Systems Administrator to support mission-critical infrastructure and enterprise services for DISA. The ideal candidate will have a strong background in Linux administration, systems maintenance, troubleshooting, automation, security compliance, and enterprise operations within a DoD environment. This position requires an active Secret clearance and Security+ certification.

Required Qualifications

• Minimum 4 years of hands-on Linux Systems Administration experience
• Active DoD Secret Security Clearance
• Current CompTIA Security+ certification (IAT Level II compliant)
• Experience administering enterprise Linux environments such as:
• Red Hat Enterprise Linux (RHEL)
• Rocky Linux
• CentOS
• Oracle Linux
• Strong understanding of:
• Linux operating systems and kernel fundamentals
• User, group, and permission management
• File systems, storage, and volume management
• Networking concepts (TCP/IP, DNS, DHCP, routing, firewalls)
• System monitoring and performance tuning
• Experience with scripting and automation using:
• Bash
• Python
• Ansible
• Familiarity with STIG implementation and compliance requirements
• Experience with patch management, vulnerability remediation, and system hardening
• Ability to troubleshoot complex system and application issues