Linux Systems Administrator

Leidos•Suitland, MD

6d•Onsite

About The Position

Leidos is seeking an experienced Linux Systems Administrator to support mission‑critical Scientific & Technical Intelligence (S&TI) systems at the Office of Naval Intelligence (ONI) in Suitland, MD. This role provides advanced Linux, cybersecurity, and enterprise infrastructure support within a dynamic classified environment enabling engineering analysis, modeling, and high‑performance computing.

Requirements

Bachelor’s degree with 8+ years of experience, or Master’s degree with 6+ years of experience. Additional experience may be considered in lieu of a degree.
Active TS/SCI clearance (in DISS).
Active DoD 8570 IAT Level III certification (e.g. CASP, CISSP, GCIH, Etc.) or higher or the ability to obtain within 30 days of offer acceptance.
Current Red Hat Certification (RHCA preferred) or the ability to obtain within 30 days of offer acceptance.
Strong enterprise Linux administration and troubleshooting expertise.
Experience with VMware, storage systems, secure transport protocols, and security configuration.
Excellent communication, problem‑solving, and customer support skills.

Nice To Haves

Experience with FLEXnet License Manager.
Background supporting mission systems or scientific/engineering software environments.

Responsibilities

Administer and optimize Linux server environments (RHEL & RPM‑based).
Perform system monitoring, issue resolution, patching, STIG hardening, and performance tuning.
Execute and document IAVA/IAVB implementation and vulnerability remediation.
Support VMware, NAS/NFS/CIFS, automation tools, and cluster services.
Maintain and update HBSS, ACAS scanning, Trellix, and other security tools.
Manage firewall rule updates, IDS/IPS configurations, and endpoint protection.
Troubleshoot and maintain NetApp storage systems.
Collaborate with cross‑functional engineering, cyber, and operations teams.