• COLSA Corporation (Huntsville, AL)
    Join our team as a Linux Systems Administrator , where...of 5 to 12 years of related experience + Active DoD Top Secret Clearance with SCI eligibility + ... We are looking for a skilled professional with a solid foundation in Linux administration and a collaborative approach to problem-solving. + Securely deploy and… 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 ... security, and providing technical support to internal users. The Systems Administrator will work closely with the...setup. + Experience or familiarity with Red Hat Enterprise Linux integration with Windows authentication services ( Active more
    DirectEmployers Association (12/05/25)
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  • Tyto Athene (Santa Barbara, CA)
    **Description** Tyto Athene is searching for a ** Systems Administrator /Information System Security Officer** to join our CA team. **Responsibilities:** + Provide ... delivery pipeline to achieve Authority to Operate (ATO) + Provide system administration of Linux systems . + Maintain an inventory of hardware and software for… more
    DirectEmployers Association (12/06/25)
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  • Schrdinger (NY)
    We're seeking a ** Systems Administrator ** to join us in our mission to improve human health and quality of life! At Schrodinger, we're dedicated to advancing ... our IT environment. You will ensure the stability and efficiency of the systems that support our scientific applications and business operations. Your expertise will… more
    DirectEmployers Association (12/03/25)
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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). ... the nature of the work, this position requires an active **DOE Q-level security clearance** at the time of...Veeam, or similar enterprise backup solutions. + Familiarity with Linux Server Operating Systems such as RHEL,… more
    DirectEmployers Association (11/22/25)
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  • Applied Research Associates, Inc. (Eglin AFB, FL)
    …required for secure SIPRNet operations. This role works directly with the Sr. Systems Administrator and the broader systems -admin team leading engineering ... + Minimum CompTIA Security+ (or higher DoD-8570-approved IAM certification) + Active Secret clearance (must be maintained) **NIPRNet/SIPRNet Administrator more
    DirectEmployers Association (11/21/25)
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  • Ace Hardware (Oak Brook, IL)
    …Summary** We are seeking a highly skilled **Cloudera Hadoop Administrator (DBA)** with hands-on experience managing and administering **Databricks environments** ... and restore operations and supporting development, test, and production systems . **Key Responsibilities** **Cloudera Hadoop Administration** + Manage and support… more
    DirectEmployers Association (10/09/25)
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  • PSEG Long Island (Bethpage, NY)
    …overall health of a variety of cyber security tools within a Microsoft Windows, Linux and UNIX server environments. This role will manage and support M365 accounts ... and manage Microsoft 365 solutions, including migration from on-premises systems to the cloud. + Provide Tier 2 support...SharePoint. + Knowledge of Networking and Security - DNS, Active Directory, Entra ID (Azure AD) including conditional access… more
    DirectEmployers Association (11/06/25)
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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 ... secure, and troubleshoot Juniper and Cisco switches. + Perform systems administration on Windows and Linux platforms...configuration (Cisco experience is a plus) + Proficient in Linux and Windows system administration + Active more
    DirectEmployers Association (12/03/25)
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  • COLSA Corporation (Huntsville, AL)
    …technical lead for a diverse infrastructure environment. The role spans Windows systems , Nutanix virtualization, Linux (RHEL), and enterprise storage. The ... or equivalent professional experience. + Minimum of 8 years related experience + Active DoD Top Secret Clearance with SCI eligibility; US Citizenship required + Must… more
    DirectEmployers Association (09/21/25)
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  • LINUX Systems Administrator

    General Dynamics Information Technology (Washington, DC)
    …of related experience **US Citizenship Required:** Yes **Job Description:** ** Linux Systems Administrator ** **- Active Top Secret Required** Seize your ... opportunity to make a personal impact as a ** Linux ** ** Systems Administrator ** with GDIT....DoD 8140 compliance required + **Security Clearance Level** : Active Top Secret + **Required Skills and Abilities:** Highly… more
    General Dynamics Information Technology (12/05/25)
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  • Linux Systems Administrator

    CACI International (Fort Meade, MD)
    …being assembled by CACI, Inc! We have an opening for a ** Linux Systems Administrator ** with an active TS/SCI w/Polygraph clearance. If you thrive ... Linux Systems Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee… more
    CACI International (10/29/25)
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  • Linux / AWS Systems

    Northrop Grumman (Morrisville, NC)
    …We Want You!** The Northrop Grumman Classified Solutions team is seeking an experienced ** Linux Systems Administrator ** to join its dynamic team of technical ... limited to the following:** + Serve as a senior Linux Systems Administrator within an...Cisco experience or certification is a plus. + Windows Active Directory (AD), Lightweight Directory Access Protocol (LDAP), and… more
    Northrop Grumman (11/15/25)
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  • Linux /Windows Systems

    COMSO, Inc (Columbia, MD)
    Linux /Windows Systems Administrator II (TS/SCI w/ Polygraph) Columbia, MD (http://maps.google.com/maps?q=Columbia+MD+USA+21046) Job Type Full-time ... are seeking aSystems Administrator IIto join our Team! ** Must have active TS/SCI w/ Polygraph before consideration ** Requirements: + Ten (10) years' experience… more
    COMSO, Inc (11/27/25)
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  • Linux Systems Administrator

    CACI International (Hampton, VA)
    Linux Systems Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI Employee Type: Regular ... Opportunity:** We are seeking a cleared, skilled and experienced Red Hat Enterprise Linux Administrator with expertise in Puppet configuration management to join… more
    CACI International (11/15/25)
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  • Linux Systems Administrator

    CACI International (Linthicum, MD)
    Linux Systems Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee ... System Administrator !** Are you passionate about Linux systems and eager to make a...support and solutions. **Qualifications:** _Required:_ + **Security Clearance:** An active NSA TS/SCI with Polygraph. + **Proven Experience:** 3… more
    CACI International (10/18/25)
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  • Senior Linux System Administrator

    BAE Systems (San Diego, CA)
    …BAE Systems . BAE Systems is seeking a Senior Closed Area Linux Systems Administrator to provide comprehensive technical and operational support for ... OU structure, and GPOs. + Install, configure, and maintain Linux -based servers and systems . + Configure, deploy,...years of experience with a degree) as a system administrator in a Linux OS environment. Direct… more
    BAE Systems (09/18/25)
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  • Senior Systems Administrator

    ManTech (Fairmont, WV)
    **MANTECH** seeks a motivated and customer-oriented **Senior Systems Administrator - Windows/ Linux Dual-Stack Specialist** to join our team in **Boulder, ... pipelines across both Windows and Linux environments. + Lead efforts to integrate Linux systems into the overall IT architecture and support the migration of… more
    ManTech (11/05/25)
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  • Sr Principal Linux Systems

    Northrop Grumman (Melbourne, FL)
    …We Want You!** The Northrop Grumman Classified Solutions team is seeking an senior ** Linux Systems Administrator ** to join its dynamic team of technical ... limited to the following: + Maintain the virtual desktop infrastructure and Linux systems supporting Government programs in accordance with established… more
    Northrop Grumman (11/25/25)
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  • Linux Systems Administrator

    L3Harris (Greenville, TX)
    …29921 Job Location: Greenville, TX Schedule: 9/80 Job Description: L3Harris is seeking a Linux Systems Administrator to support Mission System integration in ... Essential Functions: + Integrate with a team of multidiscipline, multileveled Systems Administrators supporting Linux , Windows, and Network operations +… more
    L3Harris (12/10/25)
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