Senior Linux Systems Admin

Location: King George
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Job Description # Senior Linux Systems Admin Apex Systems is seeking a
** Senior Linux/Unix Systems Administrator
** to join one of our top govermnet clients team. This role is a
** 6‑month contract‑to‑hire opportunity
** with a clear path to full‑time employment. You’ll work
** 3–4 days onsite each week
** in Dahlgren, VA in a dynamic Research, Development, Test & Evaluation (RDT&E) environment, supporting mission‑critical systems that directly impact national defense. If you or anyone you know would be interested in the position or would like to learn more, please apply now or send all resumes to
* Minimum of 6-8+ years of Linux system administration experience
* Minimum of a High School Diploma/GED equivalent is required, Bachelor's Degree is highly preferred
* Must hold an Active DoD Clearance, Top Secret is highly preferred
* Strong skills in RHEL 8/9 troubleshooting and TCP/IP networking fundamentals
* Experience with DISA STIGs, Evaluate‑STIG, STIG‑Manager
* Knowledge of Tenable tools (Security Center, Nessus) a plus
* Familiarity with Red Hat Satellite, Ansible Tower/AWX, Splunk, DNS, SMTP
* Bonus: RHSSO, VMware vSphere/vCenter, Service Now

* Certifications:

DoD 8570 IAT Level II (Security+) required
* Ability to thrive in fast‑changing environments and manage multiple priorities
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