• 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 ... in Unix and/or Linux system administration of networks and software systems , including system backup and recovery; security management and library… more
    TekSynap (10/31/25)
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  • Senior Linux System

    Parsons Corporation (Aberdeen, MD)
    …**Job Description:** _Parsons is looking for an amazingly talented_ **_Senior Linux Systems Administrator_** _to join our team!_ **_What You'll Be Doing:_** + ... _Support the system administration for ARL high performance computers_ + _Support..._Support design of Army Research Laboratory A2I2 building for systems being delivered in 2024 and future platforms_ +… more
    Parsons Corporation (11/15/25)
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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, ... Active Directory environments. + Senior -level experience with Linux system administration, networking, security hardening, and scripting/automation tools. +… more
    ManTech (11/05/25)
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  • Senior Information Systems

    Concurrent Technologies Corporation (Huntsville, AL)
    Senior Information Systems Administrator Concurrent Technologies Corporation Huntsville, AL Minimum Clearance Required: Top Secret Clearance Clearance Level ... with up-to-the-minute, customized, and powerful solutions. CTC is looking for talented Senior Information System Administrator with experience accrediting,… more
    Concurrent Technologies Corporation (10/19/25)
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  • Senior Systems Administrator

    Amentum (Waimea, HI)
    Amentum is seeking a highly experienced Senior Linux System Administrator to oversee and manage enterprise-level Linux infrastructure in support of US Navy ... environment. This role requires deep technical expertise in Linux systems , leadership in secure system administration, and...Certifications required + Linux + Linux+ Red Hat Certified System Administrator (RHCSA) ** Security Clearance**… more
    Amentum (12/24/25)
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  • Senior Windows Systems

    Adapt Forward (North Charleston, SC)
    Systems Administrator IV, Senior Windows Systems Administrator North Charleston, SC Secret Clearance with upgrade to Top Secret As a Windows ... System Administrator , you will play an integral...System Administrator , you will play an integral role on the...user desktop machines and servers. You will focus on systems and application stability, security , performance, and… more
    Adapt Forward (12/17/25)
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  • Senior SIGINT Systems

    CACI International (Beale AFB, CA)
    Senior SIGINT Systems Administrator ... administration for assigned infrastructure and establish and maintain system security . You will also apply ... * * The Opportunity: CACI is seeking a SIGINT Systems Administrator and Sensor Resource Manager Subject...security patches and operating system upgrades to ensure the security and… more
    CACI International (12/12/25)
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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 infrastructure and any processes related to these systems . **Responsibilities… more
    ManTech (12/24/25)
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  • Senior Linux System

    ManTech (Fort Meade, MD)
    Mantech seeks a motivated, career and customer-oriented ** Senior Linux System Administrator ** to join our team in **Ft. Meade, MD** . In this role, you will ... support the implementation, troubleshooting, and maintenance of IT systems , as well as manage IT system infrastructure and associated processes.… more
    ManTech (10/25/25)
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  • Senior Systems Administrator

    Chenega Corporation (Arlington, VA)
    **Req ID:** 38512 **Summary** ** Senior Systems Administrator ** **Arlington, VA** Are you ready to enhance your skills and build your career in a rapidly ... interests of our nation. SecuriGence is seeking a talented ** Senior Systems Administrator ** to help...best practices. + Apply system and operating system patches to maintain security and ensure… more
    Chenega Corporation (12/10/25)
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