Showing page 4 of 271 (Total listings: 5405)
Direct Apply
Savage, Anne Arundel County
Oct 16, 2026

CDIT is a technology solutions company supporting government and national security customers with secure, mission-focused IT solutions. We partner with highly skilled technical professionals to support complex environments where reliability, security, and operational excellence are critical. Our team values technical expertise, collaboration, and a commitment to supporting the missions of our customers. CDIT is seeking an experienced Linux System Administrator to support a secure, mission-criti…

Direct Apply
State Farm, Arlington County
Aug 25, 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…

Direct Apply
Aberdeen Proving Ground, Harford County
Oct 21, 2026

ASRC Federal is a leading government contractor furthering missions in space, public health and defense. As an Alaska Native owned corporation, our work helps secure an enduring future for our shareholders. Join our team and discover why we are a top veteran employer and Certified Great Place to Work™ ASRC Federal is looking for a Linux System Administrator to support their work with DEVCOM-CBC and the Transformation Decision Analysis Center (TDAC) organization. The Senior Linux Systems Adminis…

Direct Apply
Savage, Anne Arundel County
Jun 16, 2026

EverWatch is a government solutions company providing advanced defense, intelligence, and deployed support to our country’s most critical missions. We are a full-service government solutions company. Harnessing the most advanced technology and solutions, we strengthen defenses and control environments to preserve continuity and ensure mission success. EverWatch employees are focused on tackling the most difficult challenges of the US Government. We offer the best salaries and benefits packages …

Direct Apply
Chantilly, Fairfax County
Aug 10, 2026

Company Summary Rampant employs a diverse range of talent to create an environment that fuels innovation and fosters continuous improvement and success. At Rampant, you will have the opportunity to make an immediate impact by providing information solutions and services in support of national security missions and government transformation for Intelligence, Defense, and Federal Civilian customers. Rampant is an Equal Opportunity Employer. Job Summary We are seeking a skilled Systems Engineer to…

Direct Apply
Savage, Anne Arundel County
Oct 21, 2026

Red Arch Solutions is hiring a System Administrator on a priority program in Annapolis Junction, MD. The System Administrator shall be responsible for providing support for a large-scale Linux system including installation of COTS/GOTS/FOSS software, day-to-day operations, monitoring, and problem resolution for all the compute, network, memory, and storage system components. In addition, the System Administrator shall maintain the system security integrity and configure network components, alon…

Direct Apply
Trade, Alexandria City
Sep 17, 2026

R-00192379 Description Looking for an opportunity to make an impact? At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainable. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. If this sounds like a mission you…

Direct Apply
Chantilly, Fairfax County
Oct 15, 2026

R-00194415 Description Leidos is seeking an experienced Linux Systems Engineer to provide support to a mission critical enterprise identity and access management system. A successful candidate will develop an understanding of the services offered to external organizations, provide lifecycle systems engineering support to development and operations on the program, and use a combination of technical and functional expertise to recommend solutions to satisfy customer requirements. This position re…

Direct Apply
Wpafb, Greene County
Oct 15, 2026

RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Top Secret TRAVEL: Yes, 10% of the Time 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 …

Linux System Administrator with Security Clearance

Zachary Piper Solutions, LLC ✓ Verified
Direct Apply
Hampton Roads, Hampton City
Oct 23, 2026

Zachary Piper Solutions is looking for a CLEARED Linux System Administrator to join a large scale federal program for ground systems and geospatial support. This is a full - time position and onsite at Langley AFB in Hampton, VA. Essential Duties of the Linux System Administrator: * Perform a variety of system administration and maintenance functions associated with the monitoring and controlling LINUX and Windows computers hosting classified intelligence data and software applications. * Admin…

Direct Apply
Dulles Town Center, Loudoun County
Sep 24, 2026

Job Title: Linux System Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Local * * * The Opportunity: CACI's National Mission Systems (NMS) group is seeking a highly motivated Linux Systems Administrator tosupport mission-critical environments by ensuring secure, reliable, and scalable infrastructure across cloud and bare-metal systems…

Direct Apply
Dulles Town Center, Loudoun County
Oct 16, 2026

Job Title: Linux Systems Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: Top Secret Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Continental US * * * The Opportunity: CACI is seeking a hands-on Linux Systems Administrator III to join our Infrastructure Team supporting our family of Electronic Warfare (EW) systems. Support our end-to-end Linux environment, including engineering workstations, build ser…

Linux Systems Administrator with Security Clearance

Johns Hopkins University Applied Physics Laboratory ✓ Verified
Direct Apply
North Laurel, Prince George's County
Oct 20, 2026

Description Do you have a passion for Linux systems administration? Do you have experience with systems administration for classified systems? If so, we're looking for someone like you to join our team at APL. The Strategic Missile Defense Program Area (AH1) is seeking a motivated and experienced Linux Systems Administrator to join the Homeland Defense Mission Area (HDMA) Classified Information Systems Section. As a Linux Systems Administrator, you will work collaboratively with other section s…

Direct Apply
Belle Isle, Hancock County
Aug 14, 2026

R-00189488 Description Are you a Linux Systems Administrator ready to take your skills beyond the traditional enterprise environment? Leidos is seeking a Mid-Level Linux Systems Administrator to support one of the Department of War's (DoW) largest High Performance Computing (HPC) environments at Stennis Space Center, Mississippi. In this role, you'll work alongside a highly skilled technical team supporting advanced supercomputing resources used by scientists and engineers to solve complex comp…

Direct Apply
Fort George G Meade, Anne Arundel County
Oct 24, 2026

MANTECH seeks an experienced and passionate, career and customer-oriented Linux System Administrator to join our team in Ft. Meade, MD. Responsibilities include but are not limited to: * Creating and managing virtual environments * Systems administration of hardware and software in support of maintenance, developing and testing of information technology systems * Administration of Linux (i.e., Redhat/Rocky 8) * Scripting with Basic Shell (Bash), PUTTY * Configuring and maintaining storage and f…

Linux System Administrator with Security Clearance

Johns Hopkins University Applied Physics Laboratory ✓ Verified
Direct Apply
North Laurel, Prince George's County
Oct 6, 2026

Description Are 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 advanced technology systems? If so, we're looking for someone like you to join our team at APL! We are seeking a Linux System Administrator to join the Weapons and Countermeasures group to support secure Analysis Facilities. In this role, you will apply Risk Management Framework (RMF) principles, d…

Direct Apply
Fort George G Meade, Anne Arundel County
Oct 16, 2026

Job Title: Linux Systems Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: None Type of Travel: None * * * We are seeking a highly skilled Linux Systems Administrator to support mission-critical enterprise infrastructure in a secure Department of Defense/Intelligence Community environment. The successful candidate will provide advanced systems administration, ne…

Direct Apply
Pinecraft, Sarasota County
May 25, 2026

Job Title: Linux System Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Continental US * * * The Opportunity: CACI has an immediate opening for a Linux Systems Administrator, with a Top Secret Clearance (TS/SCI) with polygraph for our corporate development/test network and fielded systems. CACI is seeking a development Systems Adminis…

Direct Apply
Silver Spring, Montgomery County
Sep 23, 2026

About Peraton Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world's leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space,…

Direct Apply
Dulles Town Center, Loudoun County
Oct 16, 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…

We use cookies to optimize search configurations and track AdSense performance. Accept cookie consent to proceed. Privacy Policy