• Senior GCCS-J Administrator

    ManTech (Doral, FL)
    administration . + Training on relevant operating systems (eg, Windows Server , Linux ). Security+ certification or equivalent. **Desired Qualifications:** + ... in system installation, configuration, and troubleshooting. + Experience with network administration and security. + Experience with database management (eg, Oracle,… more
    ManTech (06/28/25)
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  • Network Infrastructure Engineer

    Two95 International Inc. (Columbia, MO)
    …in single data center network with disaster recovery site + Windows Server , Linux , and Mac OS system administration + Solarwinds for network monitoring + ... + Day-to-day administration , monitoring, and maintenance related to routers, switches, firewalls, load balancers, packet shapers, wireless systems, and circuits. +… more
    Two95 International Inc. (06/09/25)
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  • Ground C2 Systems Engineer

    Leidos (Oceanside, CA)
    …Qualifications, not required.** + Experience administering VMware ESXi, Red Hat Enterprise Linux , and Windows Server Operating Systems. + Experience in Microsoft ... + Two years' experience performing engineering, software development, testing, or system administration of Ground C2 systems such as JTCW, TCS, GCCS, TSOA, CHE,… more
    Leidos (05/16/25)
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  • Senior Linux System Administrator

    Black Bear Technology Solutions, LLC (Adelphi, MD)
    Linux System Administrator is responsible for leading system administration activities. This position oversees the installation, configuration, maintenance, and ... Senior Linux System Administrator Clearance Required: Top Secret or...improve performance and reliability. Key Responsibilities: + Lead system administration activities across ARLEN and CARLEN networks. + Assign… more
    Black Bear Technology Solutions, LLC (05/24/25)
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  • Theater Engineer

    Paragon Cyber Solutions (Colorado Springs, CO)
    …(3) or more years of systems administration experience supporting Windows and Linux . + Strong knowledge of Server Operating Systems. + Knowledge of Cisco ... user and groups. + Knowledge of current Microsoft Operating Systems ( Server & Workstation). + Familiarity with Oracle/Sybase/Postgress database maintenance. +… more
    Paragon Cyber Solutions (07/23/25)
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  • Software Analyst

    Belcan (Cincinnati, OH)
    …(Firewall, Routers, addressing, IP protocols, DNS) * Familiarity with Windows / Linux Administration and LDAP (Active Directory) * Solid understanding of ... * Python, PowerShell, and Bash scripting experience * Working knowledge of Windows Server and Linux operating systems * Familiarity with network infrastructure… more
    Belcan (07/19/25)
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  • Senior Systems Administrator - Windows/…

    Mount Sinai Health System (New York, NY)
    …Sinai. The Administrator is the principal technology expert for Windows and Linux systems, and help support high-performance computing (HPC) environment in the ... of applications, including VMware, REDCap, Jira, Confluence, Postgres, MySQL, SQL server , Tivoli Storage Manager (TSM), and other custom Sinai-developed software. In… more
    Mount Sinai Health System (06/24/25)
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  • Senior Linux System Administrator

    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 ... day-to-day operations and monitoring, and resolve issues related to client/ server /storage/network devices and mobile systems. + Escalate and communicate status… more
    ManTech (07/26/25)
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  • Secret Linux System Administrator

    Insight Global (Linthicum Heights, MD)
    …follow and stay up to date with proper security compliance, provide server administration , backups, imaging, encryptions, and application support. The current ... Description Insight Global is looking for a Secret cleared Linux System Administrator to sit fully on site in...environment is a mix between Linux and Windows, totaling a team of 9 admins.… more
    Insight Global (08/02/25)
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  • Linux Systems Engineer

    General Dynamics Information Technology (St. Louis, MO)
    …+ Polygraph **Public Trust/Other Required:** None **Job Family:** Systems Administration **Skills:** Kubernetes, Linux ,Systems Engineering **Experience:** 5 + ... years of related experience **US Citizenship Required:** Yes **Job Description:** ** Linux Systems Engineer** A Linux Systems Engineer is responsible for building… more
    General Dynamics Information Technology (07/28/25)
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