• Senior Linux /Unix Administrator

    S4 Inc. (Omaha, NE)
    Linux +; or Oracle Certified Professional Oracle Linux System Administrator ; or Red Hat Certified Engineer ; or Oracle Certified Professional Solaris ... is preferred: ITIL 4 Foundations; Red Hat Certified Systems Administrator ; or Linux Professional Institute Certification Linux Administrator ; or CompTIA… more
    S4 Inc. (10/08/25)
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  • Senior Systems Administrator - Windows/…

    ManTech (Fairmont, WV)
    … (MCSA/MCSE) or equivalent (eg, Azure Administrator ). + Red Hat Certified Engineer (RHCE) or equivalent advanced Linux certification. + CompTIA Security+ (or ... **MANTECH** seeks a motivated and customer-oriented **Senior Systems Administrator - Windows/ Linux Dual-Stack Specialist** to join our team in **Boulder, CO** .… more
    ManTech (11/05/25)
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  • Linux Administrator

    CACI International (Chantilly, VA)
    …(IAM) and integration with Linux systems. * Red Hat Certified System Administrator (RHCSA) or Red Hat Certified Engineer (RHCE) certification. * ITIL, ... Linux Administrator Job Category: Information Technology...availability, and capacity; implement proactive solutions. * Collaborate with network , security, and application teams to resolve system issues… more
    CACI International (11/13/25)
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  • Sr. Linux System Administrator

    Robert Half Technology (Raymond, OH)
    Description Summary We are seeking an experienced Sr. Linux System Administrator / Engineer to maintain and optimize the Linux environment supporting and ... for operational efficiency. Requirements Required Qualifications + Proven experience as a Linux System Administrator . + Experience with Linux System… more
    Robert Half Technology (12/10/25)
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  • Senior Linux Administrator Team Lead

    General Dynamics Information Technology (Falls Church, VA)
    …years of related experience **US Citizenship Required:** Yes **Job Description:** **HOW A LINUX SYSTEM ADMINISTRATOR WILL MAKE AN IMPACT:** + Provide system ... Security+ CE | CompTIA - CompTIA, Red Hat Certified Engineer (RHCE) | Red Hat - Red Hat **Experience:**...and usage charts, including CPU usage, disk usage and network uptime for the Linux Servers. +… more
    General Dynamics Information Technology (10/25/25)
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  • Linux System Administrator

    Actalent (Poway, CA)
    Job Title: System Administrator Job Description We are seeking an experienced System Administrator with a strong understanding in deploying and managing ... infrastructure (VMware, Azure, and AWS). + Proactively maintain and develop all Linux infrastructure technology to maintain a 24x7x365 uptime service. + Install and… more
    Actalent (12/30/25)
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  • Senior Systems Administrator - Windows/…

    Mount Sinai Health System (New York, NY)
    …data warehouse team and a research data services team. The **_Senior Systems Administrator / Engineer ,_** as a member of the Scientific Computing and Data group, ... practices. + At least 6 years of experience in designing, administering and troubleshooting Linux and Windows systems, storage systems, network and VMs. + The… more
    Mount Sinai Health System (12/22/25)
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  • Linux System Administrator

    ManTech (Fort Meade, MD)
    **ManTech** seeks an experienced and passionate, career and customer-oriented ** Linux System Administrator ** to join our team located in the Fort Meade, MD area. ... **Responsibilities include, but are not limited to:** + Design, engineer , and implement automated hardening scripts for internal servers adding scalability while… more
    ManTech (10/16/25)
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  • Linux System Administrator

    ManTech (Fort Meade, MD)
    **MANTECH** seeks an experienced and passionate, career and customer-oriented **System Administrator ** to join our team located in the Fort Meade, MD area. ... **Responsibilities include, but are not limited to:** + Design, engineer , and implement automated hardening scripts for internal servers adding scalability while… more
    ManTech (12/30/25)
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  • Linux System Administrator

    ManTech (Fort Meade, MD)
    **MANTECH** seeks an experienced and passionate, career and customer-oriented **System Administrator ** to join our team located in the **Fort Meade, MD** area. ... **Responsibilities include, but are not limited to:** + Design, engineer , and implement automated hardening scripts for internal servers adding scalability while… more
    ManTech (12/02/25)
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