Showing page 17 of 204 (Total listings: 4074)

Linux/Windows Systems Administrator

Ascension Federal Services ✓ Verified
Direct Apply
Springfield, Greene County
May 13, 2026

Linux/Windows Systems Administrator Experience: 4 Years Education Bachelors in IT. 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 a…

Linux Server Systems Administrator

Leidos ✓ Verified
Direct Apply
Bethesda, Montgomery County
Jul 16, 2026

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 initiate a repa…

Linux Systems Engineer/Administrator

Prophasys ✓ Verified
Direct Apply
Annapolis Junction, Anne Arundel County
Oct 20, 2025

Linux Systems Engineer/Administrator with experience supporting government programs through the design, implementation, and maintenance of secure and reliable Linux-based systems. Skilled in system installation, configuration, patching, and troubleshooting to ensure compliance with security standards and mission requirements. Proficient in automation, scripting, and monitoring tools to streamline operations and enhance performance. Adept at working in fast-paced, cleared environments, collabora…

Linux Systems Cloud Administrator

SAIC ✓ Verified
Direct Apply
Cimarron Hills, El Paso County
Jul 10, 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

Fuse Engineering ✓ Verified
Direct Apply
Annapolis Junction, Anne Arundel County
Aug 1, 2024

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 speciali…

Mid-Level Linux Systems Administrator (TS/SCI w/ Poly Required)

Red Alpha ✓ Verified
Direct Apply
Annapolis Junction, Anne Arundel County
Oct 12, 2025

Description A day in the life: We are looking for a Linux System Administrator to join a mission critical software development effort that provides automated and assisted data processing, analysis, and reporting to the customer. In this role, you will join an operations support team responsible for supporting the overall architecture/enterprise. For this position, you should be able to work independently, learn new tasks over time and can expect to: Perform Linux system administration Monitor s…

Linux Administrator / Systems Administrator (NSWC IHD Code 104)

Ehs Technologies Corporation ✓ Verified
Direct Apply
Indian Head, Charles County
Aug 16, 2025

Target Experience: Six (6) years’ experience with administering Linux operating systems, specifically Red Hat Enterprise Linux. Individual should have strong communication, teamwork, and customer relational experience, and strong technical problem solving experience. This individual should have experience in security and network/distributed computing concepts, and an ability to write and maintain BASH and Perl shell scripts, in addition to experience in DHCP, DNS, and maintaining DoD STIG Compl…

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

Lockheed Martin ✓ Verified
Direct Apply
Ken Caryl, Jefferson County
Jul 7, 2026

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, 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 Lockheed Martin…

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

Lockheed Martin ✓ Verified
Direct Apply
Littleton, Arapahoe County
Jul 8, 2026

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 Lockheed Mart…

Linux System Administrator (Actice TS/SCI Clearance with Full Scope Polygraph)

J&T Business Consulting ✓ Verified
Direct Apply
Arnold, Anne Arundel County
Jul 18, 2026

Provide support for the implementation, troubleshooting, and maintenance of IT systems Provide Tier 1 (Help Desk) problem identification, diagnosis, and resolution of problems Manage the daily activities of configuration and operation of IT systems Provide assistance to users in accessing and using IT systems Provide Tier 1 (Help Desk) and Tier 2 (Escalation) problem identification, diagnosis, and resolution of problems Provide support to IT systems, including day-to-day operations, monitoring,…

O&M Systems Administrator for Linux Systems with Security Clearance

Mauck Research Group, LLC ✓ Verified
Direct Apply
Reston, Fairfax County
Jun 15, 2026

Title: O&M Systems Administrator for Linux Systems Location: Springfield, VA Security clearance : TS/SCI with Poly Program Description: MRG provides Red Hat Enterprise Linux (RHEL)/SE Linux based HPC services throughout the lifecycle for computational requirements, architecture, acquisition, and operations to federal government customers. Our employees embrace innovation and are committed to a culture of continuous, standards-driven process improvement and assimilation of industry best practice…

Systems Administrator - Linux

Noblis ✓ Verified
Direct Apply
Atlantic City, Atlantic County
Jul 15, 2026

Responsibilities The Federal Aviation Administration (FAA) Voice Switch and Recorder (VS&R) Program Office manages seven different programs that provide critical voice communications and legal recording systems that perform critical, high availability Air Traffic Control (ATC) communications within the FAA's National Airspace System (NAS). The VS&R Program Office is responsible for acquisition of modern Internet Protocol (IP) ATC Voice Communications Systems (VCSs), which includes development o…

Linux and Windows Systems Administrator with Security Clearance

Leidos ✓ Verified
Direct Apply
Riverside, Greene County
Jul 3, 2026

R-00186537 Description Leidos Corporate Information Security Office (CISO), reporting through the Digital sector, is seeking a Linux and Windows System Administrator to support and maintain complex classified environments. The selected candidate will be responsible for administering, securing, troubleshooting, and maintaining Windows and Linux systems across physical and virtual infrastructures. This role supports mission-critical operations by ensuring system availability, compliance with secu…

Senior Linux/UNIX System Administrator

The AES Group ✓ Verified
Direct Apply
Patrick Air Force Base, Brevard County
Jul 23, 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/UNIX System Administrator

Gcubed Enterprises ✓ Verified
Direct Apply
Patrick Air Force Base, Brevard County
Jun 24, 2026

Description Job Description: The Linux/UNIX System Administrator will manage and maintain AFTAC’s Linux-based systems, ensuring optimal performance, security, and reliability. This role will involve managing system resources, performing proactive system maintenance, handling troubleshooting tasks, and supporting cloud-based Linux environments. The administrator will also provide training and guidance to junior staff and assist in system migrations. Key Responsibilities: Administer Linux/UNIX-ba…

Federal HPC Linux System Administrator, (Clearance required TS/SCI with Poly) On-Site, Maryland

Hewlett Packard Enterprise ✓ Verified
Direct Apply
Annapolis Junction, Anne Arundel County
May 8, 2026

Federal HPC Linux System Administrator, (Clearance required TS/SCI with Poly) On-Site, Maryland This role has been designed as ‘’Onsite’ with an expectation that you will primarily work from an HPE partner/customer office. Who We Are: Hewlett Packard Enterprise is the global edge-to-cloud company advancing the way people live and work. We help companies connect, protect, analyze, and act on their data and applications wherever they live, from edge to cloud, so they can turn insights into outcom…

Systems Administrator (Linux) with Security Clearance

TEKsystems c/o Allegis Group ✓ Verified
Direct Apply
Dahlgren, King George County
May 25, 2026

Title: Linux System Administrator Location: Dahlgren, Virginia (ON-SITE) Clearance Required: Secret Certification Required: Security or IAT Level II Cert Top Skills Required: • Minimum 8-10 years of experience in system administration of Linux-based servers and Linux-based workstations • Ideal Linux Admin will have Department of Defense experience with security guidelines and policies. (DISA STIGS) is a plus • Seeking specific experience with the following operating systems and services is requ…

Linux/Lab Systems Administrator (TS/SCI /w Poly required)

General Dynamics Information Technology ✓ Verified
Direct Apply
Savage, Anne Arundel County
Jun 21, 2026

Req ID: RQ222035 Type of Requisition: Regular Clearance Level Must Be Able to Obtain: Top Secret SCI Polygraph Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Skills: Backup and Recovery,Linux,Red Hat Ansible Certifications: CompTIA Security CE | CompTIA - CompTIA Experience: 10 years of related experience US Citizenship Required: Yes Job Description: SYSTEMS ADMINISTRATOR SME Advance how our customers operate while you advance your career. Join GDIT as a System…

Systems Administrator - Linux with Security Clearance

Noblis ✓ Verified
Direct Apply
Atlantic City, Atlantic County
Jul 13, 2026

Responsibilities The Federal Aviation Administration (FAA) Voice Switch and Recorder (VS&R) Program Office manages seven different programs that provide critical voice communications and legal recording systems that perform critical, high availability Air Traffic Control (ATC) communications within the FAA's National Airspace System (NAS) . The VS&R Program Office is responsible for acquisition of modern Internet Protocol (IP) ATC Voice Communications Systems (VCSs) , which includes development…

Systems Administrator - Linux with Security Clearance

Nightwing ✓ Verified
Direct Apply
Dulles Town Center, Loudoun County
Jun 19, 2026

Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers' most demanding challenges. Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization. Nightwing brings disruptive technologies, agility, and competitive offerings to customers in t…

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