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Linux Security Administrator Jobs

linux security administrator

Viewing 1 - 20 of 2,318

Linux Security Administrator Jobs requiring security clearance

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LINUX Systems Administrator| SA2 or SA3 -TS/SCI w/ Poly Security

Power3 Solutions
Fort Meade, MD(On-Site/Office)
Updated Today
TS/SCI
Polygraph

Tulzi Technologies, LLC (Tulzi) prides ourselves on an open, and honest culture in the workplace which builds a morale conducive to inspiring growth on our team, while balancing lifestyle by supporti...

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Sr. Linux/Unix Administrator

Anonymous Employer
Omaha, NE(On-Site/Office)
Updated Yesterday
5+ yrs exp
Top Secret

Duties & Responsibilities: · Perform system administration for enterprise Linux/Unix OS solutions. · Install, configure, and maintain Linux/Unix OS operating systems. · Analyze and resolve problems a...

A

System Administrator (Linux)

Nebraska Defense Research Corporation
Bellevue, NE(On-Site/Office)
Updated Today
5+ yrs exp
Top Secret

Position Description: The Linux System Administrator is responsible for providing technical support and troubleshooting for a range of Red Hat Enterprise Linux (RHEL) and other Linux distribution-bas...

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Linux/Windows Systems Administrator

Ascension Federal Services Inc
Arlington, VA(On-Site/Office)
Dec 12, 2025
5+ yrs exp
Secret

Linux/Windows Systems Administrator Location: Springfield, VA Clearance: Secret Position Overview: The Linux/Windows Systems Administrator is responsible for the design, implementation, maintenan...

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Red Hat Linux Administrator

Ascension Federal Services Inc
Arlington, VA(On-Site/Office)
Updated Today
Secret
Not Specified

Red Hat Linux Administrator Location: Arlington, VA, 22201 CLEARANCE: Active SECRET Job Description: We are seeking a skilled Red Hat Linux Administrator to join our team in Arlington, VA. The ideal c...

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O&M Systems Administrator for Linux Systems

Mauck Research Group
Herndon, VA(On-Site/Office)
Updated Today
TS/SCI
Polygraph

Mauck Research Group is a small cyber research and development company exploring emerging offensive and defensive cyber problems for our clients. DescriptionO&M Systems Administrator for Linux Systems...

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O&M Systems Administrator for Linux Systems

Mauck Research Group
Las Cruces, NM(On/Off-Site)
Dec 29
TS/SCI
CI Polygraph

Program Description: Mauck Research Group provides Red Hat Enterprise Linux (RHEL)/SE Linux based HPC services throughout the lifecycle for computational requirements, architecture, acquisition, an...

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Linux Systems Administrator

TEKsystems c/o Allegis Group
Cedar Rapids, IA(On-Site/Office)
Updated Yesterday
5+ yrs exp
Secret

Top Skills' Details • Install, configure, and maintain Linux servers (Ubuntu and RHEL). • Monitor system performance and ensure availability and reliability. • Apply OS patches and upgrades on a re...

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Linux Systems Administrator

UICGS and Bowhead Family of Companies
Dahlgren, VA(On-Site/Office)
Updated Today
Top Secret
Not Specified

Overview LINUX SYSTEMS ADMINISTRATOR (RDTE) Bowhead seeks a Linux Systems Administrator to join our team in Dahlgren, VA. The Linux Systems Administrator is responsible for system administration in ...

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Sr Linux System Administrator-TS/SCI with FS Poly

Inferno Systems
Chantilly, VA(On-Site/Office)
Updated Yesterday
10+ yrs exp
TS/SCI
Full Scope Polygraph

LINUX SYSTEM ADMINISTRATOR: Expert Level Location: Chantilly, VA US Security Clearance Requirement: TS/SCI with Full Scope Polygraph Clearance Status: Must be Current JOB DESCRIPTION: Inferno System...

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Senior Systems Administrator - Windows/Linux Dual-Stack Speciali

MANTECH
Fairmont, WV(On-Site/Office)
Updated Today
Secret
Not Specified

MANTECH seeks a motivated and customer-oriented Senior Systems Administrator - Windows/Linux Dual-Stack Specialist to join our team in Boulder, CO. or Fairmont WV This role is part of the Infrastructu...

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Linux Systems Administrator

UICGS and Bowhead Family of Companies
Dahlgren, VA(On-Site/Office)
Updated Today
Top Secret
Not Specified

Overview LINUX SYSTEMS ADMINISTRATOR (RDTE) Bowhead seeks a Linux Systems Administrator to join our team in Dahlgren, VA. The Linux Systems Administrator is responsible for system administration in a...

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Linux System Administrator

Johns Hopkins University Applied Physics Laboratory
Laurel, MD(On-Site/Office)
Updated Today
Secret
Not Specified

DescriptionAre you passionate about shaping secure, IT systems in classified environments?Do you want to influence system improvements, implementation decisions, and the overall security posture of ad...

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System Administrator

SI Tec Consulting LLC
Lexington Park, MD(On-Site/Office)
Dec 22, 2025
2+ yrs exp
Secret

🚨SITEC Consulting is NOW HIRING: Cleared System Administrator (Linux/VMware/Networking) 🚨 Location: Lexington Park, MD. (On-Site Required) Clearance: Active Secret required Salary: Competitive — base...

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Classified Linux System Administrator

Aerospace Corporation
Chantilly, VA(On-Site/Office)
Updated Today
TS/SCI
Polygraph

The Aerospace Corporation is the trusted partner to the nation's space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally funded researc...

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Tier II Linux Systems Administrator (HPC) - Top Secret Clearance

New
American Systems Corporation
Apply today! Be one of the first candidates to apply for maximum exposure.
Arlington, VA(On-Site/Office)
Updated Today
TS/SCI
Not Specified

AMERICAN SYSTEMS , a 100% employee-owned federal government contractor, is seeking a Tier II Linux Systems Administrator to support a classified High-Performance Computing (HPC) environment in Arlingt...

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Linux Engineer (Team Lead) (TS/SCI with Poly Required)

GCI, Inc
Tysons Corner, VA(On-Site/Office)
Warrenton, VA(On-Site/Office)
Updated Today
TS/SCI
Polygraph

GCI embodies excellence, integrity and professionalism. The employees supporting our customers deliver unique, high-value mission solutions while effectively leverage the technological expertise of ou...

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Senior Linux System Administrator - Clearance

Indotronix International Corp
Richardson, TX(On-Site/Office)
Updated Yesterday
5+ yrs exp
TS/SCI

Position: Senior Linux Systems Administrator Duration:12+ Months (Temp to Perm) Location: Richardson, TX 75082 Client: Raytheon seeking a System Administrator with strong Linux administration backgro...

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Linux & Windows System Admin (DoD Secret)

Zachary Piper Solutions, LLC
San Diego, CA(On-Site/Office)
Updated Yesterday
5+ yrs exp
Secret

Zachary Piper Solutions is seeking a Linux & Windows Systems Administrator to support the Research, Development, Test, and Evaluation (RDT&E) network and secure enclaves for NIWC PAC in San Diego, Cal...

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Senior Systems Administrator (Linux)

Amentum
Waimea, HI(On-Site/Office)
Updated Today
Top Secret
Not Specified

Amentum is seeking a highly experienced Senior Linux System Administrator to oversee and manage enterprise-level Linux infrastructure in support of U.S. Navy operations within a Department of Defense ...

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