• Senior HPC Administrator (High…

    Mount Sinai Health System (New York, NY)
    …local and national projects. To meet Sinai's scientific and clinical goals, the Senior Administrator has a good technical understanding for computational, data ... along with a strong focus on customer service for researchers. The HPC Senior Administrator is an expert troubleshooter and productive team member and leads… more
    Mount Sinai Health System (11/15/25)
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  • Senior Cloud System

    ManTech (Hanover, MD)
    ManTech seeks a motivated, career- and customer-oriented **Sr** **Cloud System Administrator ** to join our team in **Hanover, MD.** Our team delivers enterprise ... **Minimum Qualifications:** + 20+ years of experience as a Systems Administrator or Cloud Engineer supporting programs...Active Directory and networking + Proven experience as a System Administrator or Cloud Engineer with practical… more
    ManTech (09/10/25)
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  • Senior Systems Administrator

    SMX (Patuxent River, MD)
    Senior Systems Administrator (VMware) (4601)at SMX(View all jobs) (https://www.smxtech.com/careers/) Patuxent River, MD SMX is looking for a highly motivated ... ** Systems Administrator ** with demonstrated experience to maintain...support to on-premises infrastructure. + Understanding and familiarity of Linux operating system and virtual networking. **Required… more
    SMX (11/14/25)
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  • Systems Administrator II Generalist…

    V2X (Springfield, VA)
    …Server platforms, but there are also Linux distributions as well. + The Senior Systems Administrator II shall support the mid-level internal escalation ... complex challenges with integrity, respect, responsibility, and professionalism. We are hiring a Senior Systems Administrator II Generalist - Windows Server… more
    V2X (11/15/25)
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  • Senior System Administrator

    RTX Corporation (Springfield, VA)
    …eligible for a security clearance. + Security+ DoD 8570 certification or higher. + System administration across Linux systems . + Experience in the ... create a safer, more secure world. Raytheon seeks a Systems Administrator to join a high-performing team...its national security strategy. This is for an on-site system administrator sustaining and maintaining a VM-based… more
    RTX Corporation (11/15/25)
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  • Senior Systems Administrator

    Lockheed Martin (Dahlgren, VA)
    Linux systems and hardware\. Duties may include setting up administrator and service accounts, maintaining system documentation, tuning system ... you\! The DARKWING Program is seeking a highly motivated Systems Administrator to join our team in...to join our team in La Plata, MD\. The System Administrator \(SA\) is responsible for the… more
    Lockheed Martin (11/19/25)
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  • Senior System Administrator

    SimIS Inc. (Dahlgren, VA)
    …team), and importance of others (work and win as a team). SimIS Inc seeks a Senior System Administrator to provide combat system simulation support to ... system experience in one or more of the following disciplines: combat systems design/engineering, combat system computer program development, combat system more
    SimIS Inc. (11/06/25)
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  • Senior Systems Administrator

    Leidos (Annapolis Junction, MD)
    **Description** **Leidos** has a new and exciting opportunity for a Senior Systems Administrator in our **National Security Sector's (NSS) Cyber & Analytics ... and make a difference in National** **Security!** As a Senior Systems Administrator you will...and Windows environments. + Implement, troubleshoot, and maintain IT systems . + Manage daily IT system configuration… more
    Leidos (11/15/25)
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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 ... customized, and powerful solutions. CTC is looking for talented Senior Information System Administrator with...as well as network management. + Working knowledge of Linux and Windows operating systems (Puppet CM… more
    Concurrent Technologies Corporation (10/19/25)
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  • Senior System Administrator

    Amentum (Springfield, VA)
    …Cyber, Security, & Intel space? If so, look no further. Amentum is seeking a ** Senior System Administrator ** to join our team of passionate individuals in ... systems including the transition and migration of corporate systems * Monitor and report on system ...* Senior level experience managing and administering Linux /Windows based systems including patching, updates, and… more
    Amentum (11/20/25)
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