Showing page 12 of 270 (Total listings: 5394)
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Fort George G Meade, Anne Arundel County
Sep 1, 2026

Standard Job Description 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 each minute. Here, you'll work with cybersecurity experts on the forefront of threat protection and proactive prevention. In this fast-paced, real-world environment, you'll draw on all you…

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Dayton, Montgomery County
Oct 8, 2026

CIS Secure is currently supporting the National Air & Space Intelligence Center (NASIC) providing IT support services across multiple contract task orders. This is a NEW MULTI-YEAR contract. The program supports diverse needs providing employees many opportunities for career development, growth and advancement. To continue to excel this program, Intrepid is seeking a Linux Administrator to provide Red Hat Enterprise Linux (RHEL) and Linux system administration support. A qualified Linux Adminis…

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Redstone Arsenal, Madison County
Oct 13, 2026

Are you looking to take the next step in your career as a Senior Linux Systems Administrator (RHEL/VMware) ? Let's chat and see if we are a good match! Opportunity: Virtual Service Operations is searching for a Senior Linux Systems Administrator to join our team in support of critical IT and aerospace infrastructure in Huntsville, AL. You’ll lead Linux systems administration, design integrated hardware and software solutions, and manage end-user endpoint infrastructure across operational enviro…

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Bethesda, Montgomery County
Oct 16, 2026

R-00194746 Description Leidos is looking for our next TS/SCI-cleared DevOps Platform Engineer/Linux Systems Administrator to join a high-energy team deploying and maintaining common application-runtime capabilities in support of the DIA-NDOC (National Digital Exploitation OSINT Center) DOMEX Technology Platform (DTP). This role is part of a 10-year program supporting the DOMEX Data Discovery Platform (D3P) Modernization effort, where you’ll contribute to mission-critical capabilities alongside …

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Annapolis, Anne Arundel County
May 25, 2026

Title: Senior Linux System Administrator/System Engineer Location: Annapolis Junction Compensation Range: $190 - 210k *Clearance: *Active TS/SCI w/ Polygraph needed to apply * Company Overview: Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission…

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Sully Station, Fairfax County
May 25, 2026

In a world of possibilities, pursue one with endless opportunities. Imagine Next! At Parsons, you can imagine a career where you thrive, work with exceptional people, and be yourself. Guided by our leadership vision of valuing people, embracing agility, and fostering growth, we cultivate an innovative culture that empowers you to achieve your full potential. Unleash your talent and redefine what's possible. Job Description: Are you a skilled Linux Systems Administrator looking to work on missio…

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Laurel, Prince George's County
Sep 1, 2026

R-00191076 Description * Job Description About Leidos Leidos is a FORTUNE 500® company bringing a mix of innovative technology and sector expertise to customers in the national security, engineering, and health industries. We deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. Guided by our Mission, Vision, and Values, Leidos empowers its teams, contributes to its communities, and operates sustainably—always with a com…

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Aurora, Arapahoe County
Aug 3, 2026

Description SciTec, a Firefly Aerospace Company, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty-five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness; and …

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College Park, Prince George's County
Oct 1, 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,…

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Redondo Beach, Los Angeles County
Oct 23, 2026

RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: SCI TRAVEL: Yes, 10% of the TimeDescription 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 A…

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Woburn, Middlesex County
Nov 1, 2026

Date Posted: 2026-10-07 Country: United States of America Location: US-MA-WOBURN-WB2 ~ 225 Presidential Way ~ GODDARD 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 INTER…

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Savage, Anne Arundel County
Oct 2, 2026

Vibrint transforms national security missions through advanced technology, data, and responsible intelligence solutions. Our teams design, secure, and sustain critical capabilities that enable faster, more informed mission decisions across some of the nation's most complex operational environments. By joining this particular High Performance Computing (HPC) prime contract, you'll help maintain and advance the computing infrastructure that powers unprecedented mission-critical analysis, scientif…

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Savage, Anne Arundel County
Oct 2, 2026

Vibrint transforms national security missions through advanced technology, data, and responsible intelligence solutions. Our teams design, secure, and sustain critical capabilities that enable faster, more informed mission decisions across some of the nation's most complex operational environments. By joining this particular High Performance Computing (HPC) prime contract, you'll help maintain and advance the computing infrastructure that powers unprecedented mission-critical analysis, scientif…

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Dahlgren, King George County
Jun 1, 2026

Title: • Linux System Administrator Location: • Dahlgren, Virginia Clearance Required: • Top Secret Certification Required: • Security or IAT II Equivalent Top Skills Required: • 3 Years of Red Hat Linux Servers and Workstations (RHEL 7) • System Administration • Ideal Linux Admin will have Department of Defense experience with security guidelines and policies. (DISA STIGS) is a plus Nice to Haves • Have knowledge of corporate services including: DNS, SMTP, RHEV, Splunk, Apache • Demonstrated e…

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Savage, Anne Arundel County
Oct 31, 2026

iper Companies is seeking a Solaris & Linux System Administrator to join a leading government and defense technology organization. The Solaris & Linux System Administrator will support enterprise Solaris and Linux environments, ensuring the reliability, security, and performance of critical infrastructure, storage, backup, and compliance systems within highly regulated environments. The Solaris & Linux System Administrator role is a long term open ended contract opportunity and requires you to …

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Savage, Anne Arundel County
Jul 28, 2026

Job Title: RedHat Linux System Administrator Location(s): Annapolis Junction, Maryland Hours: Regular Full-Time Salary Range: $120k/yr - $185k/yr Clearance Requirements This position requires a current and active TS/SCI with Poly at the time of application. What you will be doing: The SAL will perform a variety of functions, depending on the level required. The specific demonstrated skills, as more fully set forth at each level may include: providing support for the implementation and operation…

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Herndon, Fairfax County
Oct 30, 2026

Vantor is forging the new frontier of spatial intelligence, helping decision makers and operators navigate what's happening now and shape what's coming next. Vantor is a place for problem solvers, changemakers, and go-getters-where people are working together to help our customers see the world differently, and in doing so, be seen differently. Come be part of a mission, not just a job, where you can: Shape your own future, build the next big thing, and change the world. To be eligible for this…

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Huntsville, Madison County
Aug 14, 2026

Job Number 1203 Standard 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 Operati…

Linux System Administrator (Top Secret SCI)

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Oakwood, Montgomery County
Oct 10, 2026

Overview CIS Secure is currently supporting the National Air & Space Intelligence Center (NASIC) providing IT support services across multiple contract task orders. This is a NEW MULTI-YEAR contract. The program supports diverse needs providing employees many opportunities for career development, growth and advancement. To continue to excel this program, Intrepid is seeking a Linux Administrator to provide Red Hat Enterprise Linux (RHEL) and Linux system administration support. A qualified Linu…

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Laurel, Prince George's County
Sep 1, 2026

Description Job Description About Leidos Leidos is a FORTUNE 500® company bringing a mix of innovative technology and sector expertise to customers in the national security, engineering, and health industries. We deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. Guided by our Mission, Vision, and Values, Leidos empowers its teams, contributes to its communities, and operates sustainably-always with a commitment to d…

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