• System Administrator

    Leidos (San Diego, CA)
    …as SCAP scans, STIGs, and Nessus Vulnerability reports. **Preferred Qualifications** + RedHat Certified System Administrator (RHCSA) certification. + Cisco ... our CISO and Digital Modernization Sector, is seeking a ** System Administrato** r to support various classified environments. The...Install, configure, and sustain a mixture of Windows and RedHat -based systems . + Work under guidance of… more
    Leidos (11/25/25)
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  • Systems Administrator (Level 2 or 3)

    Northrop Grumman (Aurora, CO)
    …(BU). This position is located in **Aurora, CO.** **Job Duties:** + Perform as a Linux and Windows System Administrator and able to build these environments ... Space Systems (NGSP) seeks to fill a ** Systems Administrator (Level 2 or 3)** supporting...+ Solid understanding of remediating security vulnerabilities; Experience hardening Linux systems in accordance with RMF and… more
    Northrop Grumman (11/06/25)
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  • Senior System Administrator

    RTX Corporation (Tucson, AZ)
    …Provide IT systems administration in a heterogeneous Microsoft Windows and Redhat Enterprise Linux environment. + Understanding and knowledge of Windows ... to prevent security threats, protect the integrity of our systems and support Raytheon IT infrastructure around the world....+ Working experience in Windows Desktop & Server, or Redhat Enterprise Linux + Experience with data… more
    RTX Corporation (10/15/25)
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  • System Administrator

    CACI International (Laurel, MD)
    System Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular ... + Configure and manage UNIX and Windows (or other applicable) operating systems and installs/loads operating system software, troubleshoot, maintain integrity of… more
    CACI International (11/20/25)
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  • Systems Administrator

    General Dynamics Information Technology (Springfield, VA)
    …Springfield, Virginia. HOW A ** SYSTEMS ADMINISTRATORS** WILL MAKE AN IMPACT As the Systems Administrator on this contract, you will be on an engineering team ... **Job Family:** IT Infrastructure and Operations **Skills:** Information Technology (IT), Linux , System Administration **Certifications:** CompTIA Security+ CE |… more
    General Dynamics Information Technology (09/06/25)
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  • Entry Level or Mid Level System

    Belay Technologies (Annapolis Junction, MD)
    …in 2020 and a finalist in 2 021! Belay Technologies is seeking a Mid-Level System Administrator (SA2) to join our intel team. FC has on-call support ... (skills, technologies, expertise): + One (1) year experience in Linux , Unix, Windows or Cisco OS operating system...years' experience installing software packages such as .iso and RedHat package Managers (rpm) Candidates are desired to have… more
    Belay Technologies (10/10/25)
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  • Senior HPC Administrator (High Performance…

    Mount Sinai Health System (New York, NY)
    …of progressive HPC system administration and operations (preferably in a Redhat /CentOS Linux administration, Batch HPC cluster environment) + Must be an ... application, system , hardware, software, and network). Actively monitors the systems . + Maintains, tunes and manages computational, data, cloud technologies and… more
    Mount Sinai Health System (11/15/25)
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  • Sr. System Administrator

    RTX Corporation (Tucson, AZ)
    …Provide IT systems administration in a heterogeneous Microsoft Windows and Redhat Enterprise Linux environment. + Understanding and knowledge of Windows ... to prevent security threats, secure the integrity of our systems and support IT infrastructures around the world. **Senior... and support IT infrastructures around the world. **Senior System Administrator ** , internally known as Senior… more
    RTX Corporation (10/29/25)
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  • Systems Administrator (E2E) - Secret…

    General Dynamics Information Technology (Schofield, HI)
    …3 + years of related experience **US Citizenship Required:** Yes **Job Description:** SYSTEMS ADMINISTRATOR (E2E) Deliver simple solutions to complex problems as ... an End-To-End (E2E) Systems Administrator with GDIT at the Joint...and skilled in administering both Microsoft (Window Server) and Linux ( RedHat ) based environments. + Understanding of… more
    General Dynamics Information Technology (11/25/25)
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  • Senior Systems Administrator 10k…

    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 ... make a difference in National** **Security!** As a Senior Systems Administrator you will play a vital...and Windows environments. + Implement, troubleshoot, and maintain IT systems . + Manage daily IT system configuration… more
    Leidos (11/15/25)
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