Showing page 4 of 207 (Total listings: 4123)

Linux Systems Administrator with Security Clearance

MANTECH ✓ Verified
Direct Apply
Fort George G Meade, Anne Arundel County
Jul 7, 2026

MANTECH seeks an experienced and passionate, career and customer-oriented Linux Systems Administrator to join our team located in the Fort Meade, MD area. Responsibilities include, but are not limited to: * Provide comprehensive administration and support for multi-platform operating system environments. * Design and implement automated security hardening solutions to enhance scalability and streamline operating system deployments. * Configure and maintain host-based security and intrusion dete…

Linux Systems Administrator with Security Clearance

MANTECH ✓ Verified
Direct Apply
Fort George G Meade, Anne Arundel County
Jul 7, 2026

MANTECH seeks an experienced and passionate, career and customer-oriented Linux Systems Administrator to join our team located in the Fort Meade, MD area. Responsibilities include, but are not limited to: * Provide comprehensive administration and support for multi-platform operating system environments. * Design and implement automated security hardening solutions to enhance scalability and streamline operating system deployments. * Configure and maintain host-based security and intrusion dete…

Linux Systems Administrator with Security Clearance

American Systems Corporation ✓ Verified
Direct Apply
Union Park, Orange County
Jul 15, 2026

Are you a Linux systems Administrator with a Secret clearance looking to work with a team of driven, supportive, and highly skilled professionals? Then we have an exciting opportunity for you to work with our Orlando Team supporting the Naval Air Warfare Training Systems Division (NAWTSD) in the development, testing and delivery of the US Navy's P8A Poseidon Maritime Patrol Aircraft's Ground Aircrew Training Devices Combat Systems Integrated Product (CSIP). This position is 100% onsite our Orla…

Linux System Administrator with Security Clearance

Radiance Technologies ✓ Verified
Direct Apply
Alexandria, Licking County
Jun 30, 2026

Radiance Technologies is an employee-owned company with benefits that are unmatched by most companies in the Dayton OH area. Employee ownership, generous 401K, full health/dental/life/vision insurance benefits, interesting assignments, educational reimbursement, competitive salaries and a pleasant work environment combine to make Radiance Technologies a great place to work and succeed. Radiance, supporting major Air Force programs in Dayton OH, is searching for an experienced Red Hat Linux Syst…

Linux System Administrator with Security Clearance

MANTECH ✓ Verified
Direct Apply
Hood College, Frederick County
Jul 16, 2026

MANTECH seeks a motivated, career and customer-oriented Linux System Administrator to join our team in Fort Detrick, Maryland This is a hybrid position with 3 days onsite and 2 days remote. Expanded telework options are available on a case-by-case basis. This position supports a pivotal Defense Health Agency (DHA) program within our Health Portfolio. The successful candidate will work with an experienced project team supporting systems that are instrumental to Medical Logistics (MEDLOG) busines…

Linux Systems Administrator with Security Clearance

CACI ✓ Verified
Direct Apply
Hampton Roads, Hampton City
Jun 10, 2026

Job Title: Linux Systems Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Continental US * * * The Opportunity: We are seeking a cleared, skilled and experienced Red Hat Enterprise Linux Administrator with expertise in Puppet configuration management to join our IT team. The ideal candidate will play a crucial role in integrating, maintaining and opt…

Linux System Administrator with Security Clearance

Leidos ✓ Verified
Direct Apply
Omaha, Douglas County
Jun 9, 2026

R-00184457 Description Leidos Corporate Information Security team, within the Digital Modernization sector, currently has an opening for a Linux Systems Administrator in our Omaha NE office. This position is an exciting opportunity to use your experience providing advanced computing solutions in a heterogeneous environment. We use a wide array of Linux and Windows systems in a tightly integrated environment with a focus on security and high performance computing. If you want to work in a divers…

Linux Systems Administrator with Security Clearance

SAIC ✓ Verified
Direct Apply
Pearl City, Honolulu
Jul 13, 2026

Description SAIC is seeking a Linux Systems / Cloud Administrator to serve on a team supporting our customer, the HQ USINDOPACOM J76, K. Mark Takai Pacific Warfighting Center. The systems and cloud administrator will be a part of a close team that is maintaining, enhancing and upgrading a myriad of applications and services, in an enterprise environment. As part of team, you will participate in implementation and maintenance of Cloud and On-Prem IT Infrastructure to support the customer. JOB DE…

Linux System Administrator with Security Clearance

By Light Professional IT Services ✓ Verified
Direct Apply
West Falls Church, Fairfax County
May 25, 2026

By Light Professional IT Services LLC readies warfighters and federal agencies with technology and systems engineered to connect, protect, and prepare individuals and teams for whatever comes next. Headquartered in McLean, VA, By Light supports defense, civilian, and commercial IT customers worldwide. Position Overview By Light has an opening for a Sr. Systems Administrator (Linux/Unix) position supporting the Army National Guard (ARNG) in Falls Church, VA. This is an IT Service Management cont…

Senior Linux System Administrator with Security Clearance

ClearanceJobs ✓ Verified
Direct Apply
North Springfield, Fairfax County
May 25, 2026

DHI Group is a leading provider of specialized workforce solutions, connecting top talent with mission-driven organizations across the defense and intelligence community. As an employer on the Bobcat program, DHI Group offers competitive benefits, a strong culture of professional development, and the resources to support cleared professionals throughout their careers. Overview DHI Group is seeking an experienced System Administrator to support the Bobcat program in Springfield. This individual …

Principal Linux Systems Administrator / Sr. Principal Linux Systems Administrator (AHT)

Northrop Grumman ✓ Verified
Direct Apply
Redondo Beach, Los Angeles County
Jul 1, 2026

RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: No Description At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Oc…

RedHat Linux Systems Administrator with Security Clearance

Fuse Engineering LLC ✓ Verified
Direct Apply
Fort George G Meade, Anne Arundel County
May 25, 2026

> RedHat Linux Systems Administrator Fuse Engineering LLC RedHat Linux Systems Administrator Fort Meade, MD Description • Strong Linux system administration skillsGeneral Red Hat Linux system administration, security patching, OS upgrades, troubleshooting problems, and ensuring maximum availability • Red Hat Certified Engineer certification (RHCE) is a plus • Experience in VMware and/or virtual server environment administration Requirements The candidate should have a Security certification EQ…

Senior Linux System Administrator with Security Clearance

Zachary Piper Solutions, LLC ✓ Verified
Direct Apply
San Diego, San Diego County
Jul 15, 2026

Zachary Piper Solutions is looking for a Senior Linux System Administrator to join a large DOD program in San Diego, CA. Essential Duties of the Sr Linux System Administrator: * Install, configure, and support an organization's local area network (LAN), wide area network (WAN), and Internet systems or a segment of a network system. * Monitor network to ensure network availability to all system users and may perform necessary maintenance to support network availability. * May assist in network m…

Linux System Administrator/Fielder with Security Clearance

Premier Technical Services Corp ✓ Verified
Direct Apply
Tabb, York County
Jul 9, 2026

Linux System Administrator/Fielder – GCCS‑J Location: Newport News, VA – On-site Full-Time Required Travel: Ability to travel CONUS and OCONUS 25% or more Position Type: Full-Time Clearance Requirement: Active Secret Clearance with ability to obtain TS/SCI Program: Global Command and Control System – Joint (GCCS-J) Position Summary We are seeking a Linux System Administrator who is willing to learn GCCS-J and fill a hybrid role of Test Engineer and Fielding Engineer. In the tester role, the can…

Sr. Linux Systems Administrator with Security Clearance

TEKsystems c/o Allegis Group ✓ Verified
Direct Apply
Kiln, Hancock County
May 25, 2026

Top Skills' Details 1) Advanced Linux systems administration and troubleshooting 2) Networking and server infrastructure management 3) Security hardening and compliance in mission-critical environments Must be able to go through Public Trust clearance process. Candidates must be a US Citizen or possess a Green Card (no Work Visa allowed) and must pass a Dept of Commerce Background Check/POT Clearance plus be able to obtain a Common Access Card for use with the NDBC Computer and access to the ND…

Linux System Administrator, Denver with Security Clearance

Scorpion Inc ✓ Verified
Direct Apply
Aurora, Arapahoe County
May 25, 2026

Summary: Seeking an experienced, customer-facing Linux System Administrator to support efforts in a US Government Lab. All work will be on-site, in secure environment. Non-negotiable requirements: 1. TS/SCI clearance with CI Poly or better 2. college degree from an accredited university, or 5 years of relevant experience 3. active CompTIA Security certification (or equivalent) This is a quick-turnaround requirement. Applicants must be identified by 22Apr26. Key Responsibilities • Design, implem…

Linux Systems Administrator, Sr. with Security Clearance

Caelum Research Corporation ✓ Verified
Direct Apply
Aberdeen, Harford County
May 25, 2026

Senior Linux Systems Administrator • Position: Systems Administrator IV • Supported Program: U.S. Army Test & Evaluation Command • Clearance Requirement: DoD Secret • Location: On-site at Aberdeen Proving Ground, MD Role Overview We are seeking a highly skilled Senior Linux Systems Administrator to support a critical government IT services contract. The successful candidate will act as a primary subject matter expert for Linux infrastructure, automation, and high-availability systems. This role…

Linux Systems Administrator, Sr. with Security Clearance

Caelum Research Corporation ✓ Verified
Direct Apply
Aberdeen Proving Ground, Harford County
Jun 19, 2026

Senior Linux Systems Administrator * Position: Systems Administrator IV * Supported Program: U.S. Army Test & Evaluation Command * Clearance Requirement: DoD Secret * Location: On-site at Aberdeen Proving Ground, MD Role Overview We are seeking a highly skilled Senior Linux Systems Administrator to support a critical government IT services contract. The successful candidate will act as a primary subject matter expert for Linux infrastructure, automation, and high-availability systems. This role…

Linux System Administrator 3 with Security Clearance

Geon Technologies ✓ Verified
Direct Apply
Simpsonville, Howard County
Jul 21, 2026

Geon Technologies is a rapidly growing small business that provides signal processing and sensor system integration services to the United States Government (USG) and the industry base that Visit our website Register with us Linux System Administrator 3 * Columbia, MD Geon Technologies is a rapidly growing small business that provides signal processing and sensor system integration services to the United States Government (USG) and the industry base that supports them. Geon seeks to be known fo…

Senior Linux Systems Administrator with Security Clearance

TEKsystems c/o Allegis Group ✓ Verified
Direct Apply
Stennis Space, Hancock County
Jul 8, 2026

We are looking for a Senior Linux Systems Administrator to join our team and provide expert-level support for critical systems, services, and devices in both classified and unclassified spaces. This position involves working closely with other infrastructure teams to ensure system availability, reliability, and security in a high-performance computing (HPC) environment. *This role requires an active Secret clearance and will be hybrid on site at Stennis Space Center* As a Sr Linux Administrator…

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