• MAC System Administrator

    Link Solutions Inc (Aberdeen Proving Ground, MD)
    …appraised for CMMI ML3 for Services and Development. Link Solutions is seeking a MAC System Administrator ( Senior -Level) to join our team at Aberdeen Proving ... Clearance. + Non-remote (relocation incentive available) The MAC System Administrator will be responsible for maintaining macOS systems , managing updates,… more
    Link Solutions Inc (10/16/25)
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  • Senior Administrator

    Intercontinental Exchange (ICE) (Atlanta, GA)
    …troubleshooting, and resolving system performance and availability issues. The Senior Systems Administrator also assists in implementing automation ... Overview **Job Purpose** The Senior Systems Administrator is...Server+, Microsoft Windows Server accreditations or Red Hat Certified System Administrator (RHCSA). + Familiarity with CI/CD… more
    Intercontinental Exchange (ICE) (12/23/25)
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  • Senior Systems Administrator

    TekSynap (Dahlgren, VA)
    …is seeking a **S** **enior S** **ystem** ** Administrator (Unix/Linux).** The Senior Systems Administrator (Unix/Linux) serves as Key Personnel under ... support for Unix/Linux environments within the Navy enterprise. The Senior Systems Administratoris responsible forconfiguration, optimization, and sustainment… more
    TekSynap (10/31/25)
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  • Senior System Administrator

    RTX Corporation (Springfield, VA)
    …tough, meaningful problems that create a safer, more secure world. Raytheon seeks a Systems Administrator to join a high-performing team at the heart of an ... its national security strategy. This is for an on-site system administrator sustaining and maintaining a VM-based...Red Hat Enterprise Linux Certifications: RHCT or RHSA. + System administration experience across Linux systems and… more
    RTX Corporation (01/07/26)
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  • Senior Systems Administrator

    UIC Government Services and the Bowhead Family of Companies (Arlington, VA)
    **Overview** SENIOR SYSTEMS ADMINISTRATOR (NAUT): Bowhead seeks a Senior Systems Administrator to support our customer on the Nautical contract ... CISSP, CISM, or equivalent advanced security certification + Red Hat Certified System Administrator (RHCSA) + Kubernetes certifications (CKA, CKAD) Physical… more
    UIC Government Services and the Bowhead Family of Companies (01/06/26)
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  • Senior Windows Systems

    Leidos (Arlington, VA)
    …+ Support on-call rotation schedule. **Basic Qualifications:** + Bachelor's degree in information systems , computer science, information security or related ... Systems Security Certified Practitioner (SSCP) ) Training (DISA-US1390 DCWF Windows Systems Administrator ). + Expert knowledge of Windows Active Directory… more
    Leidos (01/07/26)
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  • Senior Linux System

    ManTech (Fort Meade, MD)
    ManTech seeks a ** Senior Linux System Administrator ** to join our team in **Ft. Meade, MD** . In this role, you will provide support for implementation, ... troubleshooting, and maintenance of IT systems , as well as manage IT system ...to apply for a position with MANTECH, please email us at ###@mantech.com and provide your name and contact information more
    ManTech (12/24/25)
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  • Senior System Administrator

    SAIC (Fort Belvoir, VA)
    **Description** The Senior System Administrator will provide support for operational intelligence integration and data-centric operations for customers ... day-to-day operational maintenance, support, and upgrades for complex operating systems , workstations and servers. Coordinates, directs and performs complex software… more
    SAIC (11/19/25)
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  • Senior Windows Systems

    Adapt Forward (North Charleston, SC)
    Systems Administrator IV, Senior Windows...Clearance with upgrade to Top Secret As a Windows System Administrator , you will play an integral role ... a cybersecurity solutions provider for some of the nation's most valuable information systems . Leveraging advanced threat assessment technology and experience in… more
    Adapt Forward (12/17/25)
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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, ... and Mitigation (CDM) practices. **Preferred Qualifications:** + Microsoft Certified Systems Administrator /Engineer (MCSA/MCSE) or equivalent (eg, Azure … more
    ManTech (11/05/25)
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