Senior Systems Administrator: Linux/Windows, TS/SCI | On-site
Base-2 Solutions
Base-2 Solutions is seeking a Senior Systems Administrator in Bethesda, MD, to support the OSINT Integration Center under the DOMEX Technology Platform contract. The role focuses on both Linux and Windows systems administration, performance optimization, and user support. Candidates must have an active TS/SCI clearance and at least ten years of relevant experience. The position includes competitive pay, referral bonuses, and comprehensive benefits, including 100% company-paid medical premiums. #J-18808-Ljbffr Base-2 Solutions
- SageCor Solutions is seeking a qualified candidate with Active TS/SCI clearance in College Park, Maryland. The position involves configuring and managing Linux and Windows systems, administering HPC systems, and providing IT support. Proficiency in scripting (C and Python...SeniorWindowsLinux
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- ...Information Technology is seeking a Systems Administrator for a crucial role at Langley AFB, Virginia... ...will have extensive knowledge of Windows and Linux systems and will be responsible for... ...Candidates must possess or be eligible for TS/SCI clearance. #J-18808-Ljbffr General...SeniorWindowsLinux
$92.3k - $166.85k
...exciting opportunity for a System Administrator in our Intel Sector's... ...of a company site in Alexandria. Primary... ...take direction from senior System Administrators... ...Routers, LANs, & cabling, Windows/Linux operating systems,... ...Required: Must have TS/SCI with Polygraph. Preferred...WebsiteWindowsLinuxWork at officeLocal areaImmediate startRemote workFlexible hours$125k - $200k
...Clearance Required: Top Secret SCI w Full Scope Poly... ...Corporation is seeking a Systems Administrator with TS/SCI, FS (Systems Administration... ...requires a fully on-site schedule. Schedule is subject... ...knowledge of UNIX, LINUX and Windows operating systems in the conduct...WebsiteWindowsLinuxFull timeContract workWork experience placementRemote work- ...relocate to another site in the National Capital... ...into opportunity: A Systems Engineer with GDIT plays... ...servers, primarily Windows and Linux, and support server... ...systems. Perform systems administration of desktop and server... ...II certification. TS/SCI clearance with the ability...SeniorWebsiteWindowsLinuxSummer workRelocation
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...Clearance: Active TS/SCI Clearance... ...Location: On-Site at Suffolk Building... ...ZTI is seeking a Senior Trellix Cybersecurity... ...securing advanced data systems . This role... ...teams, system administrators, and data engineers... ...hardening for Windows and Linux systems. ~ Experience...SeniorWebsiteWindowsLinuxPermanent employmentFull timeContract workWork at officeImmediate startRemote work- ...technology solutions provider in McLean, VA is seeking a System Administrator with a strong focus on Linux systems. Candidates must have a Bachelor's degree and... ..., and configuring network protocols. An active TS/SCI clearance with Full Scope Poly is mandatory from day...SeniorWebsiteLinux
- Base-2 Solutions is hiring a Junior Systems Administrator in Bethesda, MD. The role involves supporting... ...the OSINT Integration Center with Linux and Windows systems administration, performance... .... Candidates must have an active TS/SCI clearance, a Bachelor's degree, and experience...WindowsLinux
$142.79k
...Obtain: Top Secret SCI + Polygraph Public... ...Skills: Operating Systems (OS), System Administration, Systems Management... ...relocate to another site in the National Capital... ...servers, primarily Windows and Linux servers. Support and... ...Security Clearance: TS/SCI clearance and ability...SeniorWebsiteWindowsLinuxTemporary workSummer workWork at officeLocal areaRelocationFlexible hours- ...Inc in McLean, Virginia is seeking a Senior Systems Administrator & Database Engineer to ensure secure... ...include administering both Linux and Windows systems, managing SQL Server databases... ...degree in a relevant field and active TS/SCI clearance. The position offers an extensive...SeniorWindowsLinux
- ...Arlington, VA Clearance Required: TS/SCI minimum (US Citizen) Employment... ...Analytics is seeking an experienced IT Systems Administrator to support a U.S. Army program. The... ...environment. ~ Proficiency with Windows and/or Linux operating systems administration....WebsiteWindowsLinuxFull timeLocal area
- ...Group is currently searching for a TS/SCI cleared Hardware Exploitation Engineer... ...programming language and operating system concepts and experience with assembly... ...: VxWorks, Integrity, Embedded Linux, JunOS, Linux, Unix, Windows Embedded. Experience with RTOS desired...SeniorWindowsLinuxContract workFor contractorsWork experience placement
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...leading defense contractor in Bethesda seeks a Citrix Systems Administrator to provide 100% on-site operations support at the National Media Exploitation... ...8 years of relevant experience, along with an active TS/SCI clearance. The position offers a competitive pay range...SeniorWebsiteFor contractors$125k - $200k
...Top Secret SCI w Full Scope Poly... ...Corporation is seeking a Senior Network Engineer with TS/SCI, FS (Network Engineering... ...requires a full on-site schedule. Schedule... ...Assisting the System Administrators Assisting the Lead... ...~ Familiarity with Linux operating systems...SeniorWebsiteLinuxFull timeContract workWork experience placement- ...Group is searching for a Senior Software Reverse... ...boot process, kernel, and system internals to devise novel... ...resident on Microsoft® Windows and UNlX® based platforms... ...CLEARANCE ~ Active TS SCI + CI Polygraph QUALIFICATIONS... ...on both Windows and Linux or other BSD and Unix...SeniorWindowsLinuxFor contractors
- ...currently searching for a Senior Systems Integrator Engineer to... ...: DUTIES • Perform Linux builds, installs, configuration, administration, and troubleshooting of both Linux and Windows platforms to include but... ...• Must have an active TS/SCI with Counterintelligence...SeniorWindowsLinuxWork at officeRemote workFlexible hours
- Systems Administrator - (Active TS/SCI security clearance with a current polygraph ) College Park, United States | Posted on 06/11/2026 Fifteen (15... ...degree. Experience with multiple operating systems (Windows, Linux, Unix) Experience with Ubuntu Familiar with System and...WindowsLinux
- ...Windows Systems Engineer And Administrator Vexterra is looking to fill a Windows Systems Engineer and Administrator... ...) Clearance Active TS/SCI clearance Active CI Polygraph or... ...and maintaining systems in a Linux environment Certification relating...SeniorWindowsLinuxShift work
- ...consulting partner is seeking an experienced Systems Administrator for a long-term project in Arlington... ...role requires expertise in managing Windows Server, Linux systems, and Citrix environments... ...experience and an active DoD TS/SCI clearance. This opportunity offers competitive...WindowsLinux
- Nightwing Group is seeking a Cloud Systems Administrator in Arlington, VA. The role involves deploying... ...strong expertise in AWS services, Linux/Unix, and Windows administration. A Bachelor's degree... ...with U.S. citizenship and an active TS/SCI clearance. Join our team and help...WindowsLinux
- ...Cyber Security Engineer - TS/SCI Xcelerate Solutions... ...develop, and implement secure systems in on-premises infrastructure... ...While most work is conducted on-site at our client location in... ...understanding of including Microsoft Windows and Linux/UNIX operating systems...WebsiteWindowsLinuxContract workRemote workFlexible hours
- ...degree. Experience with Windows and Linux server system administration as well as network engineering... ...complex projects as a senior contributor within a... ...subcontractor personnel. Active TS SCI security clearance with a... ...supporting a customer site in College Park and...SeniorWebsiteWindowsLinuxFor subcontractorRemote work2 days per week1 day per week
$112k - $179k
...seeking a poly cleared Senior Infrastructure and Systems Administrator to support cleared research... ...with strong Linux and Windows administration experience... ...position requires full‑time on‑site work at a customer site... ...requires an active/current TS/SCI w/ Polygraph Desired Additional...SeniorWebsiteWindowsLinuxFull timeContract workFor subcontractorRemote workShift work- ...Description Senior Systems Engineer (Hybrid) - TS/SCI Xcelerate Solutions is seeking a highly skilled... ...improvement. While most work is conducted on-site at our client location in Bethesda,... ...in a Red Hat, Centos or Oracle Linux Experience with big data...SeniorWebsiteLinuxContract workRemote workFlexible hours
$112k - $179k
Peraton is seeking a Systems Administrator in Washington, DC, with a focus on system monitoring, troubleshooting... ...and security. Candidates should have TS/SCI clearance, a Bachelor's degree, and at... .... The role demands strong skills in Windows and Red Hat environments, as well as...SeniorWindows$147.29k - $199.28k
Virtualization Systems Administrator Own your opportunity to support national defense. Your work... ...and supporting infrastructure across Windows and Linux platforms Monitor health, performance... ...CE, etc.) Clearance : Active TS/SCI clearance with a favorable polygraph...WindowsLinux- ...Top Secret/SCI with Active Full Scope Polygraph - must be... ...are seeking an experienced Linux-focused System Administrator to support a mission-critical... ...Community. This is an on-site position in a Sensitive Compartmented... ...) environment requiring a TS/SCI clearance with an...WebsiteLinux
- General Dynamics Information Technology is hiring a Systems Engineer in Washington, D.C., requiring a BA/BS... ...technologies into existing systems. Candidates must have a TS/SCI clearance and proven experience with Windows and Linux servers. Benefits include flexible working options...SeniorWindowsLinuxFlexible hours
- A leading technology company is seeking a Linux Server Systems Administrator to provide on-site support in Bethesda, Maryland. This role requires expertise in... ...degree and extensive experience, along with an active TS/SCI clearance. This is an ideal opportunity to work...WebsiteLinux
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