Linux Systems Administrator

About the role

We are seeking a mid-level Linux System Administrator to support multiple Department of Defense (DoD) programs. This role involves designing, building, configuring, and validating systems in support of DoD contracts. The ideal candidate will have experience with Red Hat Enterprise Linux (RHEL), DoD cybersecurity compliance, and mission-critical systems.

Responsibilities

• Design, build, configure, and validate local, fielded, prototype, and low-volume production systems in support of multiple DoD contracts.
• Install, secure, and maintain Red Hat Enterprise Linux (RHEL) systems across development, lab, and operational environments.
• Implement and validate cyber-compliant configurations, including DISA STIG application and remediation, RMF control implementation and sustainment, SCAP and ACAS vulnerability scanning and mitigation.
• Support the design, installation, and configuration of systems and networks of varying complexity.
• Collaborate with IT staff, Cyber Security teams, systems engineers, and program personnel to ensure system security and mission readiness.
• Prepare systems and associated documentation for customer acceptance, deployment, and fielding activities.
• Troubleshoot system, network, and security issues in lab and deployed environments.
• Occasionally travel to customer sites, field locations, or integration events.
• Provide limited after-hours support during critical build, deployment, or maintenance windows.
• Develop and maintain technical documentation, system build procedures, and compliance artifacts.

Requirements

• 3–5 years of experience as a Linux System Administrator supporting production, lab, or deployed systems.
• Strong hands-on experience with Red Hat Enterprise Linux (RHEL) administration.
• Experience implementing DoD cybersecurity compliance requirements, including DISA STIGs, RMF, SCAP, and ACAS.
• Experience building, configuring, or deploying systems used in mission-critical or fielded environments.
• Understanding of networking fundamentals (DNS, routing, firewalls, VLANs, SSH).
• Experience with scripting or automation (e.g., Bash, Python).
• Ability to collaborate effectively with IT, Cyber Security, engineering, and program teams.
• Willingness and ability to travel occasionally.
• Willingness to provide limited after-hours support as required by program needs.
• Must be able to obtain and maintain a Top Secret (TS) security clearance.
• U.S. Citizenship required due to DoD contract and clearance requirements.
• Able to obtain a FAA Level 3 Medical Certification from an FAA-designated Aviation Medical Examiner.
• Must be able to lift 25 pounds.

Qualifications

• Active Top Secret (TS) security clearance preferred.
• DoD 8570/8140 certification (e.g., Security+ CE or higher) preferred.
• Red Hat certifications (RHCSA, RHCE) preferred.
• Experience with virtualization platforms (VMware, KVM) preferred.
• Prior experience supporting operational DoD or Warfighter-focused systems preferred.
• Familiarity with secure system architectures and network design preferred.
• Experience with storage technologies (NFS, SAN, iSCSI) preferred.

Benefits

• Generous PTO and Leave Times
• Paid Time Off (PTO)
• Paid Parental Leave
• Financial Benefits
• Company-funded 5% contribution to your 401(k) retirement plan
• Company-funded 5% contribution to your Employee Stock Ownership Plan
• Continuing Education Assistance
• Health, Medical, And Wellness Benefits
• Medical Insurance
• Dental & Vision Insurance
• Life Insurance and Long-Term Disability (LTD)
• Vision Reimbursement

What We Value

• Creativity and innovation in solving challenges
• Integrity and responsibility in all actions
• Collaboration across teams and specialties
• Responsiveness in fast-paced environments
• Passion for national security and excellence