Showing page 14 of 204 (Total listings: 4063)

Senior Linux/UNIX System Administrator

ChaTeck Incorporated ✓ Verified
Direct Apply
US
Jul 24, 2026

Role: Senior Linux/UNIX System Administrator Location: Brevard County , FL 32925 Let’s create our future together at The AES Group! About The AES Group: The AES Group is a premier technology and engineering consulting company that has been bringing businesses and talent together for over 20 years to deliver innovative solutions that have the greatest positive impact on society. AES has helped over 40 business enterprises, including Fortune 500 companies, engage their customers, empower their em…

Senior Linux Systems Administrator [$237k/yr] TS/SCI-FS Poly with Security Clearance

SYSTOLIC ✓ Verified
Direct Apply
Savage, Anne Arundel County
Jul 16, 2026

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Administer Linux and Windows environments, including Windows Server. • Implement containerization and automation using Ansible and Salt. • Develop scripts in Bash, Perl, and Python. • Support cloud services, specifically AWS. Qualifications & Compensation: • Degree: Technical bachelor's degree or equivalent experience • Years of experience: 15 years • Total Compensation: $237k yearly Jo…

Principal Linux System Administrator- must have active secret clearance

RTX Corporation ✓ Verified
Direct Apply
Redstone Arsenal, Madison County
Jul 17, 2026

Date Posted: 2026-07-15 Country: United States of America Location: US-AL-HUNTSVILLE-401 ~ 401 Jan Davis Dr NW ~ JAN DAVIS 401 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.? U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance? Security Clearance Type: Secret - Current Security Clearance Status: Active and existing se…

Staff Linux System Administrator/ TS/SCI W/Poly- Littleton, CO with Security Clearance

Lockheed Martin ✓ Verified
Direct Apply
Littleton, Arapahoe County
Jul 6, 2026

Job Number 733902BR 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, MD, Lockheed Martin has employees based in all 50 states and more than 570 facilities that span 70 countries. This Enterprise Operations (EO) position supports the…

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

Power3 Solutions ✓ Verified
Direct Apply
Fort George G Meade, Anne Arundel County
Jul 21, 2026

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 supporting personal and family goals with flexibility. Tulzi offers secure network systems and software engineering solutions in both public and private sectors. With certified expert consulting the team at Tulzi is able to address the customers mission, and follow through in the systems development life cy…

Mid-Level Linux Systems Administrator [$244k/yr] TS/SCI-FS Poly with Security Clearance

SYSTOLIC ✓ Verified
Direct Apply
Savage, Anne Arundel County
Jul 16, 2026

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Administer and manage complex systems environments. • Perform provisioning, configuration, patching, securing, and hardening of systems. • Utilize expertise in Linux, VMWare, Ansible, and Network Protocols. Qualifications & Compensation: • Degree: Technical bachelor's degree or equivalent experience • Years of experience: 10 years • Total Compensation: $244k yearly Job Description: • Ex…

Mid-Level Linux Systems Administrator [$216k/yr] TS/SCI-FS Poly with Security Clearance

SYSTOLIC ✓ Verified
Direct Apply
Savage, Anne Arundel County
Jul 27, 2026

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Collaborate with a technical team to manage and optimize Linux-based environments. • Utilize STE/STN tools and Nessus to support system administration and security compliance. Qualifications & Compensation: • Degree: Technical bachelor's degree or equivalent experience • Years of experience: 10 years • Total Compensation: $216k yearly Job Description: • Maintain, configure, and troubles…

Linux Systems Administrators - All Levels

Leidos ✓ Verified
Direct Apply
Annapolis Junction, Anne Arundel County
Jun 17, 2026

Linux Systems Administrators / Engineers are needed across several Leidos prime programs in our Intelligence Sector’s Cyber & Analytics Business Area (CABA). Our talented team is at the forefront of 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, 401(k) with a 6% company match and immedia…

Linux/Windows Systems Administrator with Security Clearance

Ascension Federal Services Inc ✓ Verified
Direct Apply
State Farm, Arlington County
May 25, 2026

Linux/Windows Systems Administrator Location: Springfield, VA Clearance: Secret Position Overview: The Linux/Windows Systems Administrator is responsible for the design, implementation, maintenance, and security of the organization's Linux and Windows server infrastructure. The ideal candidate should possess strong expertise in Linux and Windows operating systems. Key Responsibilities: System Administration: Install, configure, and maintain Linux and Windows servers. Perform routine system moni…

Sr. Principal Linux Systems Administrator

RTX ✓ Verified
Direct Apply
US
Jul 18, 2026

Date Posted: 2026-07-16&xa;&xa; Country: United States of America&xa;&xa; Location: US-MA-ANDOVER-AN1 ~ 350 Lowell St ~ AN1 ESSEX BLDG&xa;&xa; Position Role Type: Onsite&xa;&xa; U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance​&xa;&xa; Security Clearance Type: DoD Clearance: Secret&xa;&xa; Secu…

RHEL 8 Linux Systems Administrator

SAIC ✓ Verified
Direct Apply
El Segundo, Los Angeles County
Jul 16, 2026

Description We are seeking an experienced RHEL 8 Linux Systems Administrator specializing in Red Hat Enterprise Linux (RHEL) 8 or later to support and maintain secure, mission-essential, air gapped information systems. You will have a strong background in enterprise Linux administration, cybersecurity best practices, and operations within isolated or high-assurance computing environments working in our El Segundo, CA office. Key Responsibilities: Install, configure, harden, and maintain RHEL 8 …

Windows & Linux Systems Administrator Staff

Lockheed Martin ✓ Verified
Direct Apply
Fort George G Meade, Anne Arundel County
May 13, 2026

Job Description This position is participating in our External Referral Program. If you know somebody who may be a fit, click here to submit a referral. If your referral is hired, you'll receive a $3000 payment! WHAT WE'RE DOING: Lockheed Martin, Cyber & Intelligence invites you to step up to one of today’s most daunting challenges: the evolving threat of cyber warfare. As a cyber security professional at Lockheed Martin, you’ll protect the networks that our citizens and the world depend upon e…

Senior Unix/Linux Systems Administrator

The Tatitlek Corporation ✓ Verified
Direct Apply
Dahlgren, King George County
Jun 23, 2026

Job specifications are intended to present a descriptive list of the range of duties performed by employees. Specifications are not intended to reflect all duties performed within the job. SUMMARY: The Senior Systems Administrator shall demonstrate experience in systems administration in the following operating systems: UNIX, Linux, or Windows. The specialized experience includes Linux system administration of Redhat and security setup and updates (IAVA's); UNIX system administration of Solaris…

Linux System Administrator - Omaha, NE

Military Spouse Corporate Career Network ✓ Verified
Direct Apply
Omaha, Douglas County
Jul 9, 2026

ATTENTION MILITARY AFFILIATED JOB SEEKERS - Our organization works with partner companies to source qualified talent for their open roles. The following position is available to Veterans, Transitioning Military, National Guard and Reserve Members, Military Spouses, Wounded Warriors, and their Caregivers . If you have the required skill set, education requirements, and experience, please click the submit button and follow the next steps. All positions are onsite, unless otherwise stated. Leidos …

Sr. Principal Linux Systems Administrator

RTX Corporation ✓ Verified
Direct Apply
Andover, Essex County
Jul 20, 2026

Date Posted: 2026-07-16 Country: United States of America Location: US-MA-ANDOVER-AN1 ~ 350 Lowell St ~ AN1 ESSEX BLDG Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.? U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance? Security Clearance Type: DoD Clearance: Secret Security Clearance Status: Ability to obtain INTERIM…

Senior Linux Systems Administrator / HPC

Kelly Services ✓ Verified
Direct Apply
Illinois Medical District, Chicago
Jul 8, 2026

$100000 - $120000 A leading institution in Chicago is hiring a Systems Administrator to support advanced computing systems within a fast-growing data science environment. This role focuses on Linux infrastructure, high performance computing clusters, and modern automation tools such as Ansible, Docker, and distributed storage technologies. This is a unique opportunity to work in a highly technical environment supporting cutting edge research in artificial intelligence and large-scale data proce…

Experienced/Lateral - Linux Systems Administrator

Five Rings ✓ Verified
Direct Apply
New York City, New York
Jan 29, 2025

About Five Rings Five Rings is a proprietary trading firm founded with a vision of combining strategy, innovation and technology to succeed in today’s global markets. With offices in New York, Boca Raton, London and Amsterdam, Five Rings trades in various domestic and international markets, both established and esoteric. Our team constantly seeks new opportunities, analyzes their risks and rewards, and creates strategies and tools to capitalize on them. We have an open culture and encourage the…

Linux Server Systems Administrator with Security Clearance

Fuse Engineering LLC ✓ Verified
Direct Apply
Savage, Anne Arundel County
May 25, 2026

> A SECURITY CLEARANCE AND POLYGRAPH ARE REQUIRED Description Support High Performance Computing (HPC) server-class platforms, network devices, server interconnects, mass storage systems and supporting infrastructure services. One of the critical cornerstones of the IT environment is the closely coupled cooperation between and among the array of computational nodes, networks, storage, and security devices. Areas supported include HPC, HPC infrastructure support, networks, automation, and specia…

Linux Systems Cloud Administrator

SAIC ✓ Verified
Direct Apply
Colorado Springs, El Paso County
Jul 11, 2026

Description SAIC is seeking a Linux Systems/Cloud Administrator in Colorado Springs, CO to support the AF TENCAP HOPE 2.0 contract. The AF TENCAP HOPE 2.0 contract bridges intelligence community collection architectures, capabilities, and technologies with DoD operational and tactical requirements. This effort will deliver rapid, innovative, and cost-effective capabilities to meet warfighter needs, and will include bringing national capabilities to bear across all warfighting domains spanning i…

Linux Server Systems Administrator

Leidos ✓ Verified
Direct Apply
Bethesda, Montgomery County
Jul 15, 2026

Description Leidos is looking to fill a Linux Server Systems Administrator position to support the National Digital Exploitation & OSINT Center (NDOC). This role requires an individual that has technical experience with administering Linux servers within a within a physical and virtual environment. This role is responsible for interacting with administrators to handle service inquiries and problems. Duties include examining customer problems and implementing appropriate corrective action to ini…

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