• GCCS Systems Administrator

    Paragon Cyber Solutions (Colorado Springs, CO)
    …with GCCS-J version 6.0 and/or at least five (5) years of Windows and Linux systems administration experience. + Strong knowledge of Server Operating ... ready for an exciting and dynamic career as a Systems Administrator to join other smart, talented, and dedicated...with Java application servers (Tomcat, JBoss). + Familiarity with Linux /UNIX applications and services (NFS, SSH, NTP, LDAP, HTTP,… more
    Paragon Cyber Solutions (07/12/25)
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  • Systems Administrator, Sr / Top Secret…

    Lockheed Martin (Sunnyvale, CA)
    …DoD 8570 compliant certification\) * Demonstrated experience with Windows Server and Linux operating systems * Demonstrated experience with Active Directory ... CA, on a 9x80 schedule, with every other Friday off\!** This Information Systems Analyst Sr position will support military Space Programs\. This position receives… more
    Lockheed Martin (09/04/25)
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  • Systems Engineer - IT

    Lockheed Martin (Littleton, CO)
    …Linux system administration , including installing, troubleshooting and hardening Linux and Windows operating systems \(both bare\-metal and virtual ... working with a 150\+ C2\-Ground user base operating, maintaining and managing Windows/ Linux based systems supporting a software development environment\. This… more
    Lockheed Martin (09/24/25)
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  • Senior Systems Engineer, Engineering Cell

    SOLUTE Careers (Pope, MS)
    …and Linux ). + Troubleshoot and resolve infrastructure issues on Windows and Linux systems for services such as Active Directory, DHCP, DNS, Group Policy ... Sigma Defense is seeking a Senior Systems Engineer willing to tackle complex technical issues...all-inclusive): + Will be responsible for the installation, configuration, administration , and management of Microsoft SQL Server 2019 and… more
    SOLUTE Careers (09/26/25)
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  • Systems Engineer Tier II

    CyrusOne (Wappingers Falls, NY)
    …x 7 on-call support rotation **Qualifications:** + 3+ years of experience in systems administration or related field (data center environment preferred) + ... ProLiant and Synergy hardware, VMware vSphere virtualized platforms, Microsoft and Linux based operating systems . The Systems Engineer II will complete the… more
    CyrusOne (08/19/25)
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  • Systems Administrator with Secret Clearance

    TestPros (Colorado Springs, CO)
    …compliance, and patching per cybersecurity requirements. Key Responsibilities: + Administer Windows/ Linux systems and services + Perform regular patching, ... Support system accreditation and audit readiness Qualifications: + 3+ years in system administration (Windows or Linux ) + Familiarity with DoD IT environments… more
    TestPros (08/02/25)
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  • Systems Administrator

    CACI International (Norfolk, VA)
    …_Required:_ + High School Diploma + Up to 7 years of experience in systems administration + Basic knowledge of system administration principles + ... certifications (CompTIA A+, Network+) + Knowledge of Windows and Linux systems + Basic scripting abilities +...position offers an opportunity to begin a career in systems administration supporting critical Navy maintenance … more
    CACI International (09/05/25)
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  • Principal Cyber Systems Administrator

    Northrop Grumman (Augusta, GA)
    …program management and end users. + Must be able to configure and manage Linux and Windows operating systems upon start date, installs/loads operating system ... Provide Tier 1 and Tier 2 technical support (Domain Administration , System Administration , and Network Administration...by navigating via command line through different variations of Linux Operating Systems to include Ubuntu, Red… more
    Northrop Grumman (08/20/25)
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  • Linux System Administrator

    ManTech (Fort Meade, MD)
    …of hardware and software in support of developing and testing of information technology systems + Experience with Linux administration + Experience using ... **ManTech** seeks an experienced and passionate, career and customer-oriented ** Linux System Administrator** to join our team located in the Fort Meade, MD area.… more
    ManTech (09/04/25)
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  • Systems Security Engineer II

    Sierra Nevada Company, LLC (Lone Tree, CO)
    …and policy set forth by the DoD + Experience with both Windows or Linux operating systems + DoD 8140 Certification (Ex: CompTIA Security+, CompTIA CySA+, ... implementing and maintaining compliance controls. + Experience with Red Hat Enterprise Linux and Windows Server virtualized administration and deployment. This… more
    Sierra Nevada Company, LLC (09/10/25)
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