• Systems Administrator - Senior

    CACI International (O'Fallon, IL)
    Systems Administrator - Senior Job Category:...business systems + Design and implement robust system security measures and ensure compliance with ... of degree) + 8-11 years of extensive experience in system administration + Secret security clearance, or...investigation upon hire + Expert knowledge of various operating systems (eg, Windows Server, Linux , Unix) +… more
    CACI International (11/08/25)
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  • Senior System Administrator

    Synergy ECP (Columbia, MD)
    Senior System Administrator Columbia, MD (http://maps.google.com/maps?q=Columbia+MD+USA+21046) Description Company Description: Synergy ECP is a Service Disabled ... with a team obtaining and configuring Virtual Machines (VMs), loading Operating systems and software, performing security hardening, patching, and monitoring… more
    Synergy ECP (10/15/25)
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  • Public Key Infrastructure (PKI) Security

    Tetrad Digital Integrity LLC (Falls Church, VA)
    …We are currently recruiting for a Senior level Public Key Infrastructure (PKI) Security Administrator . PKI enables secure communication and data exchange using ... Web Service + Active Directory Certificate Services (ADCS) monitoring + IT system administration experience ( systems management, networks, firewalls) in an… more
    Tetrad Digital Integrity LLC (11/20/25)
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  • Secret Sr Windows System

    Insight Global (Baltimore, MD)
    …Description A Client of Insight Global is looking for a secret cleared Sr Windows System Administrator to join their team and help mentor more jr admins. This ... person will design, implement, and manage secure, high-availability systems . Responsibilities include deploying enterprise system images, maintaining VMware… more
    Insight Global (11/07/25)
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  • System Administrator

    Insight Global (Las Vegas, NV)
    Job Description Insight Global is looking for a System Administrator II to join one of our largest healthcare clients in Las Vegas, NV. This person will be ... tuning and hardware integration Maintain and support Windows and Linux virtual server environment (150 servers within it) Ensure...MS Active Directory (Group Policy, DNS, and DHCP) for system configuration and security policy enforcement Basic… more
    Insight Global (09/09/25)
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  • Training Simulator System

    Lockheed Martin (Orlando, FL)
    …facilities\. * Currently possess a current Security \+ certificate\. * System Administration of Windows and/or Linux server environments\. * Experience with ... long\-term deployment to a foreign country as a Training System Simulator System Administrator for...initiatives, programs and policies as directed\. Comply with site security and access control procedures in accordance with F\-35… more
    Lockheed Martin (10/29/25)
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  • System and Network Administrator

    BOOZ, ALLEN & HAMILTON, INC. (Annapolis Junction, MD)
    System and Network Administrator The Opportunity: A well-designed network is critical to move data and enable organizations to achieve their missions, but how ... complex network issues, analyze current working infrastructures, and increase security , reliability, and availability for mission-critical network systems .… more
    BOOZ, ALLEN & HAMILTON, INC. (10/24/25)
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  • Network Security Administrator

    TekSynap (Pensacola, FL)
    **Responsibilities & Qualifications** The **Network Security Administrator ** is responsible fornetwork boundary protection, cybersecurity posture, and ... Implement and manage network segmentation and access control policies. + Oversee system security authorization efforts, including support for **RMF (Risk… more
    TekSynap (10/07/25)
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  • System Administrator 2

    Synergy ECP (MD)
    System Administrator 2 MD Description Member of a cross-functional team providing Windows systems administration/engineering expertise and guidance for a ... critical enterprise-wide messaging system used in the Information Transport Service (ITS) program....Policy configurations, patching servers and applying DISA STIGS, basic Linux experience is a bonus. Duties include: + Serve… more
    Synergy ECP (10/15/25)
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  • System Administrator

    RTX Corporation (El Segundo, CA)
    …Person, or Immigration Status Requirements:** Active and transferable US government issued security clearance is required prior to start date.​ US citizenship is ... required, as only US citizens are eligible for a security clearance​ ** Security Clearance:** DoD Clearance: Secret...secure world. **What You Will Do:** + Provide IT systems administration in a heterogeneous Microsoft Windows and RedHat… more
    RTX Corporation (09/24/25)
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