Principal Linux Systems Administrator Jobs

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Linux Systems Administrator - Active Clearance

Aduril Industries

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Washington, District of Columbia, USA

Full-time

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century's most innovative companies to the defense industry, Anduril is changing how military systems are designed, built and sold. Anduril's family of systems is powered by Lattice OS, an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and c
Posted 17 days ago | Updated 1 hour ago

Senior Linux Systems Administrator

Boeing Company

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Hazelwood, Missouri, USA

Full-time

Senior Linux Systems Administrator Company: The Boeing Company The Boeing Company's Specialized United States Infrastructure organization is currently seeking a Senior Linux Systems Administrator to join the team in Hazelwood, MO. This role is centered on delivering technical leadership and project support for strategic, enterprise-level hosting environments, primarily catering to initiatives within the Boeing Defense, Space & Security (BDS) business unit. An ideal candidate will recognize th
Posted 60+ days ago | Updated 1 hour ago

Linux Systems Administrator

Booz Allen Hamilton

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Fort Meade, Maryland, USA

Full-time

Job Number: R0223865 Linux Systems Administrator The Opportunity: Your combination of people skills and system administrator expertise makes you the team hero, solving one problem after another. What if you could use those skills to improve the technology supporting the Intelligence Community? We're looking for a system administrator who spe cia lizes in maintaining the security posture of a Linux computing environment for a team of 30 analysts and developers performing data science activities
Posted 2 days ago | Updated 2 hours ago

Linux Systems Administrator

SAIC

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Bethesda, Maryland, USA

Full-time

Job ID: 2508461 Location: BETHESDA, MD, US Date Posted: 2025-08-08 Category: Information Technology Subcategory: Sys Administrator Schedule: Full-time Shift: Day Job Travel: No Minimum Clearance Required: TS/SCI with Poly Clearance Level Must Be Able to Obtain: None Potential for Remote Work: No Description SAIC, a leading provider of systems development & deployment, targeting and intelligence analysis, systems engineering & integration, and training capabilities and solutions for th
Posted 23 hours ago | Updated 11 hours ago

Linux Systems Administrator (Clearance)

TEKsystems c/o Allegis Group

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Cedar Rapids, Iowa, USA

Full-time

We are seeking a skilled and proactive Linux Systems Administrator to join our IT infrastructure team. The ideal candidate will have hands-on experience managing and maintaining systems running Ubuntu and Red Hat Enterprise Linux (RHEL). This role is critical to ensuring the stability, security, and performance of our Linux-based environments. Key Responsibilities Install, configure, and maintain Linux servers (Ubuntu and RHEL).Monitor system performance and ensure availability and reliability
Posted 2 days ago | Updated 10 hours ago

Linux Systems Administrator (Clearance)

TEKsystems c/o Allegis Group

•

Cedar Rapids, Iowa, USA

Full-time

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 regular basis and upgrade administrative tools and utilities Description **Active security clearance required (secret or top secret)** We are seeking a skilled and proactive Linux Systems Administrator to join our IT infrastructure team. The ideal candidate will have hands-on experience managing and maintaini
Posted 16 days ago | Updated 2 days ago

Linux Systems Administrator

SAIC

•

McLean, Virginia, USA

Full-time

Job ID: Location: MCLEAN, VA, US Date Posted: 2025-08-08 Category: Information Technology Subcategory: Sys Administrator Schedule: Full-time Shift: Day Job Travel: No Minimum Clearance Required: TS/SCI with Poly Clearance Level Must Be Able to Obtain: None Potential for Remote Work: No Description SAIC, a leading provider of systems development & deployment, targeting and intelligence analysis, systems engineering & integration, and training capabilities and solutions for the Intellige
Posted 23 hours ago | Updated 11 hours ago

Linux Systems Administrator - Oracle Cloud Certified

ArnAmy, Inc.

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Tallahassee, Florida, USA

Third Party, Contract

Job Purpose: Installs, configures, maintains and performs system integration testing of UNIX based operating systems, related utilities and hardware. Responsible for troubleshooting UNIX-based hardware and software problems. Monitors systems activities and fine tunes system parameters and configuration to optimize performance and ensure security of systems. Performs capacity analysis, monitors and controls usage of disk space. Develops procedures for routine administration including backup/resto
Easy Apply
Posted 22 days ago

5G Linux Systems Administrator

Booz Allen Hamilton

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Maryland, USA

Full-time

Job Number: R0223041 5G Linux Systems Administrator The Opportunity: Are you driven by relentless curiosity and a passion for learning? Does the future of technology and innovation excite you? Elevate your system administration expertise by joining Booz Allen's cutting-edge 5G team! We are seeking innovative professionals who are ready to enhance, manage, and maintain our cutting-edge cloud-native network to support vulnerability research, data science efforts, virtual and augmented reality prog
Posted 17 days ago | Updated 2 hours ago

LINUX Systems Administrator - Active Top Secret Required

General Dynamics Information Technology

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Washington, District of Columbia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Backup and Recovery (Software), Information Technology (IT) Systems, Linux Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Linux Systems Administrator - Active Top Secret Required Seize your opportunity to
Posted 8 days ago | Updated 23 hours ago

Linux Systems Administrator, Sr / Onsite: Huntsville, AL

Lockheed Martin Corporation

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Huntsville, Alabama, USA

Full-time

Job Description Our employees are the core of everything we do, and they are helping the future arrive. As a leading technology innovation company, our team of over 100,000 employees work with our partners around the world to bring the latest technology to our customers' toughest challenges. Headquartered in Bethesda, Maryland, US, Lockheed Martin has employees based in all 50 states and more than 570 facilities that span 70 countries. Lockheed Martin Enterprise Operations (EO) is actively see
Posted 56 days ago | Updated 1 hour ago

Senior LINUX Systems Administrator

Link Technologies

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North Las Vegas, Nevada, USA

Contract

JOB-7360Senior LINUX Systems AdministratorNorth Las Vegas, NVContractLink Technologies (LinkTechConsulting.com), a Las Vegas based IT consulting firm, is currently seeking a Senior LINUX Systems Administrator to join our team. Employer asks for I-9 information. QUALIFICATIONS Bachelor's degree in a computer related field or equivalent.Minimum of five (5) years of related experience.Knowledge of technical principles, theories, standards, practices, and procedures.Five (5) years of experience of k
Posted 4 days ago | Updated 12 hours ago

Junior LINUX Systems Administrator

Link Technologies

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North Las Vegas, Nevada, USA

Contract

JOB-7359Junior LINUX Systems AdministratorNorth Las Vegas, NVContractLink Technologies (LinkTechConsulting.com), a Las Vegas based IT consulting firm, is currently seeking a Junior LINUX Systems Administrator to join our team. Employer asks for I-9 information. QUALIFICATIONS Bachelor's degree in a computer related field or equivalent.Minimum of two (2) years of related experience.Knowledge of technical principles, theories, standards, practices, and procedures.Two (2) years of experience of kno
Posted 4 days ago | Updated 12 hours ago

Linux Systems Administrator, Sr / Secret / Onsite: Sunnyvale, CA

Lockheed Martin Corporation

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Sunnyvale, California, USA

Full-time

Job Description Join our Lockheed Martin team! Our employees are the core of everything we do, and they are helping the future arrive. As a leading technology innovation company, our team of over 100,000 people works with partners around the world to bring proven performance to our customers' toughest challenges. Headquartered in Bethesda, MD, Lockheed martin has employees based in all 50 states and more than 570 facilities that span more than 70 countries. We are hiring a Linux System Adminis
Posted 60+ days ago | Updated 1 hour ago

Windows Linux Systems Administrator - TS/SCI with Polygraph

General Dynamics Information Technology

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Fort Belvoir, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Linux, System Administration, Windows Applications Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: General Dynamics Information Technology (GDIT) is looking for a skilled IT Syst
Posted 18 days ago | Updated 15 hours ago

Windows Linux Systems Administrator - TS/SCI with Polygraph

General Dynamics Information Technology

•

Fort Belvoir, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Linux, System Administration, Windows Applications Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: General Dynamics Information Technology (GDIT) is looking for a skilled IT Syste
Posted 18 days ago | Updated 17 hours ago

IT Linux Systems Administrator - Top Secret Clearance

SpaceX

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Hawthorne, California, USA

Full-time

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars. IT LINUX SYSTEMS ADMINISTRATOR - TOP SECRET CLEARANCE SpaceX is looking for an experienced Systems Administrator with deep knowledge and broad experience across Linux-based technologies and application support. The id
Posted 60+ days ago | Updated 1 hour ago

Senior Linux Systems Administrator

Leidos

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Annapolis, Maryland, USA

Full-time

Leidos has a new and exciting opportunity for a Senior Linux Systems Administrator in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immed
Posted 60+ days ago | Updated 1 hour ago

Senior Linux Systems Administrator - 10k Sign on Bonus

Leidos

•

Aurora, Colorado, USA

Full-time

Leidos has a new and exciting opportunity for a Senior Linux Systems Administrator in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immed
Posted 23 days ago | Updated 1 hour ago

Linux Systems Administrator

Booz Allen Hamilton

•

Bethesda, Maryland, USA

Full-time

Job Number: R0218704 Linux Systems Administrator The Opportunity: Your technical expertise makes you the team hero, solving one problem after another. What if you could use those skills to improve the technology supporting the U.S. Federal Government? We're looking for a Cross Domain Spe cia list to help us design, deploy, and maintain Cross Domain Solutions for an enterprise environment. As a Linux System Administrator on our project, you'll constantly look for ways to make the infrastructure b
Posted 60+ days ago | Updated 2 hours ago