• Tyto Athene (Santa Barbara, CA)
    **Description** Tyto Athene is searching for a ** Systems Administrator /Information System Security Officer** to join our CA team. **Responsibilities:** + ... pipeline to achieve Authority to Operate (ATO) + Provide system administration of Linux systems . + Maintain...+ Onsite support is required. **Clearance:** + Active DoD Top Secret or Top more
    DirectEmployers Association (12/06/25)
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  • COLSA Corporation (Huntsville, AL)
    Join our team as a Linux Systems Administrator , where you will support and manage a diverse mix of workstations, servers, and high-performance computing (HPC) ... including firewalls and SELinux. + Work with Ansible for system configuration and automation. + Deploy and manage containerized...to 12 years of related experience + Active DoD Top Secret Clearance with SCI eligibility +… more
    DirectEmployers Association (10/02/25)
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  • Infinity Systems Engineering (Colorado Springs, CO)
    …WE ARE MORE - now, come be more with us! Job Summary: The Systems Administrator is responsible for the maintenance, configuration, and reliable operation of ... system performance and security, and providing technical support to internal users. The Systems Administrator will work closely with the IT team to ensure all… more
    DirectEmployers Association (12/05/25)
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  • Argonne National Laboratory (Lemont, IL)
    Argonne has an opportunity to serve as the System Administrator of the classified National Security Systems (NSS) for the Security Programs Facility (SPF). ... granted by the US Department of Energy (DOE). It's functionally equivalent to a ** Top Secret clearance** , allowing access to information classified up to that… more
    DirectEmployers Association (11/22/25)
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  • COLSA Corporation (Huntsville, AL)
    …professional experience. + Minimum of 8 years related experience + Active DoD Top Secret Clearance with SCI eligibility; US Citizenship required + Must ... We are seeking a highly skilled Systems Analyst to serve as the technical lead...Microsoft Certifications (MCSA/MCSE, AZ-104, etc.). + Red Hat Certified System Administrator (RHCSA) or Engineer (RHCE). +… more
    DirectEmployers Association (09/21/25)
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  • Infinity Systems Engineering (Alexandria, VA)
    …- now, come be more with us! Job Summary: We are seeking a skilled Systems Administrator /Network Engineer to join our mission-driven team. This position offers a ... including network infrastructure management (switch deployment & configuration) and system administration in a classified environment. The ideal candidate will… more
    DirectEmployers Association (12/03/25)
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  • ABBTECH Professional Resources, Inc. (Reston, VA)
    ** Systems Engineer** **Location- Reston, Va** **Clearance- TS /SCI w/ FSP** **Salary- $200k-$215k/yr** _The above salary range represents the range expected for ... Skills:** - Must have experience with IdAM / ICAM delivery systems , Authentication, Authorization, Attributes, - Entitlement Management and Digital Policy Management… more
    DirectEmployers Association (10/22/25)
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  • Tyto Athene (Ashburn, VA)
    …Architect. + Strong experience in enterprise IT environments as an applications or systems administrator . + Practical knowledge of Windows and Linux systems ... plan, coordinate, and execute logging-related initiatives across interconnected and heterogeneous systems . + Administer and optimize enterprise IT applications and … more
    DirectEmployers Association (11/01/25)
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  • Applied Research Solutions (Dayton, OH)
    …developing, and maintaining integrations between cloud-based applications and on-premise systems . You'll work closely with cross-functional teams to ensure seamless ... data flow, system interoperability, and scalable architecture across our enterprise platforms...integration engineering. + Bachelor's degree in Computer Science, Information Systems , or related field. + Must be a US… more
    DirectEmployers Association (12/10/25)
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  • IT Systems Administrator

    SpaceX (Hawthorne, CA)
    IT Systems Administrator - Top Secret ...both formal and informal situations. ADDITIONAL REQUIREMENTS: + Active Top Secret or TS /SCI with ... enabling human life on Mars. IT SYSTEMS ADMINISTRATOR - TOP SECRET CLEARANCE...+ Experience with networking technologies and the Linux operating system environment. + PowerShell (or other) scripting experience. PREFERRED… more
    SpaceX (10/11/25)
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  • System Administrator - Top

    Cambridge International Systems Inc (Charleston, SC)
    System Administrator - Top Secret Clearance | Charleston, SC Cambridge International Systems , Inc. Join a dynamic global team united by shared ... in defense and security. We are currently seeking a System Administrator to support operations in Charleston....is a full-time, CONUS position requiring an active DoD Top Secret clearance. This position may be… more
    Cambridge International Systems Inc (10/08/25)
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  • Computer Associates' Top Secret

    General Dynamics Information Technology (Fairfax, VA)
    …across the country. We are currently seeking a Computer Associates' Top Secret Security product Systems Administrator . Responsibilities: * Provide ... Trust/Other Required:** Other **Job Family:** IT Infrastructure and Operations **Skills:** CA Top Secret ,IBM z/OS,Security Tools **Experience:** 7 + years of… more
    General Dynamics Information Technology (11/13/25)
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  • NCIS Systems Administrator | Active…

    General Dynamics Information Technology (Quantico, VA)
    …work in ServiceNow. **WHAT YOU'LL NEED TO SUCCEED** + **Security Clearance Level:** Active Top Secret clearance (Must be TS /SCI eligible) + **Required ... **Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret /SCI **Public Trust/Other Required:** None **Job Family:** IT… more
    General Dynamics Information Technology (11/04/25)
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  • PDM/PLM Application Administrator

    RTX Corporation (Plano, TX)
    …US citizens are eligible for a security clearance​ **Security Clearance:** Top Secret - Current **Application System Administrator (PDM/PLM - Windchill) ... leading across teams to drive results + Active and transferable US government issued TOP SECRET security clearance is required prior to start date. US… more
    RTX Corporation (11/24/25)
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  • LINUX Systems Administrator - Active…

    General Dynamics Information Technology (Washington, DC)
    …related experience **US Citizenship Required:** Yes **Job Description:** **Linux Systems Administrator ** **- Active Top Secret Required** Seize your ... Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret /SCI **Public Trust/Other Required:** None **Job...opportunity to make a personal impact as a **Linux** ** Systems Administrator ** with GDIT. A career in… more
    General Dynamics Information Technology (12/05/25)
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  • Systems Administrator / Top

    Lockheed Martin (Arlington, VA)
    **Description:** You will be the Systems Administrator for the Advanced Concepts Lab \(ACL\) - a cutting edge team within Lockheed Martin's Advanced Technology ... scientific disciplines\. What You Will Be Doing: As the Systems Administrator you will be responsible for...special access\. The selected candidate must possess an active Top Secret clearance to start\. \#lmatl **Basic… more
    Lockheed Martin (10/22/25)
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  • Staff Linux/Windows Systems

    Lockheed Martin (King Of Prussia, PA)
    …the boundaries of technology to help our customers achieve their missions\. The Work: As a Systems Administrator on the ECIW team, you will: \- Work in an agile ... new network setup/modernization * Must currently have an active Top Secret Clearance **Desired Skills:** * Windows...of start\) * CompTIA Linux\+ or Red Hat Certified Systems Administrator Certification * Ability to provide… more
    Lockheed Martin (12/10/25)
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  • Senior DevOps/ Systems Administrator

    ICF (Huntsville, AL)
    …who will be a key driver to make this happen. We are seeking a skilled ** Systems Administrator ** to support daily operations of IT systems for a government ... program, ensuring stability, security, and compliance across infrastructure components. The Systems Administrator will be responsible for maintaining servers,… more
    ICF (10/09/25)
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  • G2 Senior Systems Administrator

    General Dynamics Information Technology (Fairfax, VA)
    …**Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret **Public Trust/Other Required:** None **Job Family:** IT Infrastructure ... **Job Description:** Transform technology into opportunity as a **Senior Systems Administrator ** at GDIT. Shape what's next...YOU'LL NEED TO SUCCEED:** + **Security Clearance Level:** Active Top Secret clearance. (A Secret more
    General Dynamics Information Technology (12/08/25)
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  • Principal Windows Systems

    Northrop Grumman (Gilbert, AZ)
    RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE TYPE: Top Secret TRAVEL: Yes, 10% of the Time **Description** At Northrop Grumman, our ... Office (CIDO) organization is seeking an experienced **Principal Windows Systems Administrator ** to join its dynamic team...and permissions + Candidates must have a current DOD ** Top Secret ** level security clearance (at a… more
    Northrop Grumman (12/04/25)
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