• Principal Linux Systems

    Leidos (Aurora, CO)
    **Description** **Leidos** has a new and exciting opportunity for a ** Principal Linux Systems Administrator ** in our **Intelligence Sector, Cyber & ... and make a difference in National** **Security!** Join our team as a ** Linux Systems Administrator ** , where you'll provide crucial support for the… more
    Leidos (12/19/25)
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  • Principal Linux Systems

    Northrop Grumman (San Diego, CA)
    …best work of your career. Northrop Grumman Classified Solutions is seeking a well-qualified Linux Systems Administrator to join its dynamic team of technical ... to purchase hardware, software, and system components. + Perform as a Linux systems administrator for a classified government network and manage all… more
    Northrop Grumman (01/15/26)
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  • Principal Linux Systems

    Northrop Grumman (Linthicum Heights, MD)
    …best work of your career. Northrop Grumman Classified Solutions is seeking a well-qualified ** Linux Systems Administrator ** to join its dynamic team of ... include but not be limited to the following: + Perform as primary Linux Systems Administrator for a classified government contract. + Communicate effectively… more
    Northrop Grumman (11/19/25)
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  • Sr Principal Linux Systems

    Northrop Grumman (Boulder, CO)
    …will include but not be limited to the following: + Perform as primary Linux Systems Administrator for a classified government contract. + Communicate ... certification will be a condition of continued employment + Must have Linux Operating Systems support experience + Linux Workstation and Server management… more
    Northrop Grumman (01/07/26)
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  • Principal Linux Systems

    RTX Corporation (Aurora, CO)
    …You will be supporting a Raytheon program in a classified environment as a ** Principal Linux System Administrator in Aurora, CO.** Responsibilities include ... building, maintaining, and securing Information Technology systems and directly supporting customer mission-critical capabilities. + You will work closely with… more
    RTX Corporation (12/29/25)
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  • Principal Linux Administrator

    RTX Corporation (Richardson, TX)
    …to join our RTX **Enterprise Services** team: **Role Overview:** RTX is seeking a Principal Linux Administrator to support a highly virtualized Enterprise ... and software. + Perform software upgrades, patching, and system maintenance on Linux systems . + Troubleshoot issues and apply security policies specific to … more
    RTX Corporation (12/12/25)
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  • Principal Linux Administrator

    RTX Corporation (Mckinney, TX)
    …to join our RTX **Enterprise Services** team: **Role Overview:** RTX is seeking a Principal Linux Administrator to support a highly virtualized Enterprise ... solutions, optimize system performance, and ensure the reliability and security of Linux systems in a mission-critical setting. **This role is onsite for Tucson,… more
    RTX Corporation (01/16/26)
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  • Linux / AWS Systems

    Northrop Grumman (Morrisville, NC)
    …We Want You!** The Northrop Grumman Classified Solutions team is seeking an experienced ** Linux Systems Administrator ** to join its dynamic team of technical ... limited to the following:** + Serve as a senior Linux Systems Administrator within an...**This position may be filled at either level 3 ( Principal level), or level 4 (Sr. Principal more
    Northrop Grumman (11/15/25)
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  • Senior Systems Administrator

    Mount Sinai Health System (New York, NY)
    Administrator is the principal technology expert for Windows and Linux systems , and help support high-performance computing (HPC) environment in the ... team and a research data services team. The **_Senior Systems Administrator /Engineer,_** as a member of the...and metrics, etc. The infrastructure includes both Windows and Linux systems with file servers in multiple… more
    Mount Sinai Health System (12/22/25)
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  • Principal /Sr. Principal

    Northrop Grumman (Patuxent River, MD)
    …Grumman Aeronautics Systems (NGAS) has an exciting career opportunity for a ** Principal /Sr. Principal Systems Administrator ** to join the Ground ... for a classified government contract. + Perform as a Linux \Redhat System Administrator for a classified government...Linux , Cisco). + Experience operating under and managing systems within NISPOM Chapter 8, DCID 6/3-ICD 503, RMF,… more
    Northrop Grumman (12/12/25)
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  • Principal System Administrator

    BAE Systems (Nashua, NH)
    …BAE Systems . BAE Systems is seeking a highly trained and motivated Principal Closed Area Systems Administrator to lead and manage classified IT ... impats in the following ways_** + Administer patch management for RHEL-based Linux systems , including vulnerability scanning, patch deployment, and compliance… more
    BAE Systems (12/19/25)
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  • Sr Principal Systems

    Northrop Grumman (Aurora, CO)
    …they're making history. Northrop Grumman Space Systems (NGSP) is seeking a **Sr Principal Systems Administrator ** to join our team at our facility in ... be limited to, the following:** + Perform as a Linux and Windows System Administrator on large...+ Solid understanding of remediating security vulnerabilities; Experience hardening Linux systems in accordance with RMF and… more
    Northrop Grumman (11/13/25)
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  • Sr. Principal Systems

    Northrop Grumman (Aurora, CO)
    …history. Northrop Grumman Space Systems (NGSP) seeks to find a **Sr. Principal Systems Administrator ** supporting the Integrated National Systems ... in **Aurora, CO.** **Job Duties:** + Perform as a Linux and Windows System Administrator and able...+ 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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  • Principal /Sr. Principal HPC System…

    Northrop Grumman (Jessup, MD)
    …with PhD. Will consider 4 years additional experience in lieu of degree. + Linux systems administration proficiency + Basic knowledge and experience with file ... (NGMS) is seeking a ** Principal or Sr. Principal HPC System Administrator ** . This position...4 years additional experience in lieu of degree. + Linux systems administration proficiency + Basic knowledge… more
    Northrop Grumman (12/05/25)
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  • Principal System Administrator

    DCCA (Annapolis Junction, MD)
    Principal System Administrator Location Annapolis Junction, MD Job Code 2270 # of Openings 1 Apply Now ... a competitive compensation and benefits package. Visit our website at: www.dcca.com Principal System Administrator Candidate must have an active TS/SCI w/Poly… more
    DCCA (11/17/25)
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  • Principal Windows Systems

    Northrop Grumman (Linthicum Heights, MD)
    …but not be limited to the following: + Perform as a primary Windows/VMware systems administrator for a classified government contact. + Maintain smooth operation ... the best work of your career. Northrop Grumman Mission Systems is seeking a well-qualified Windows Administrator ...Windows AD, LDAP, VMWare, and knowledge of SAN storage systems . + Linux Operating System experience and/or… more
    Northrop Grumman (01/15/26)
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  • PDM/PLM Application Administrator

    RTX Corporation (Plano, TX)
    …(DT) Engineering Digital Solutions (EDS) group is seeking a motivated Business Systems & Transformation Technologist ( Principal Specialist). This candidate will ... technologies, tools, or methodologies: PTC Windchill, Oracle database, Apache web server, Linux & Windows server operating systems , Shell scripting, CAD tools… more
    RTX Corporation (11/24/25)
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  • Sr. Principal NetApp Storage…

    Northrop Grumman (Baltimore, MD)
    …will include but not be limited to the following: + Serve as a systems administrator with shared responsibility for the effective maintenance and operational ... Office (CIDO) organization is seeking a senior NetApp Storage Administrator with expertise in NetApp storage management to join...scanning tools and remediation. + Experience deploying and managing Linux systems (preferably Red Hat) in both… more
    Northrop Grumman (01/15/26)
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  • Windows Server Administrator

    Northrop Grumman (Wright Patterson AFB, OH)
    …is seeking a Windows Server Administrator / Principal Windows Server Administrator to maintain and enhance Windows Systems and Infrastructure in support ... develop and maintain good working relationships with internal and external stakeholders This Windows Systems Administrator will be an active part of a team of … more
    Northrop Grumman (12/03/25)
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  • NATO AGS Principal System…

    Northrop Grumman (San Diego, CA)
    …today. Northrop Grumman Aeronautics Systems Sector is seeking a well-qualified Systems Administrator to join its dynamic team of technical professionals for ... for a classified government contract. + Perform as a Linux \RedHat System Administrator for a classified government...Windows AD, LDAP, VMWare, and knowledge of SAN storage systems . + Linux Operating System experience and/or… more
    Northrop Grumman (01/07/26)
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