• Principal Linux Administrator (Top…

    RTX Corporation (Richardson, TX)
    …across multiple sites. This role is ideal for candidates with specialized expertise in Linux system administration , a commitment to collaboration, and the ... **Enterprise Services** team: **Role Overview:** RTX is seeking a Principal Linux Administrator to support a highly..., and software. + Perform software upgrades, patching, and system maintenance on Linux systems .… more
    RTX Corporation (12/12/25)
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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 ... of VMware (ESXi and vCenter). **Qualifications We Prefer:** + Deployment and administration of systems in Amazon Web Services (AWS)/Commercial Cloud Services… more
    RTX Corporation (12/29/25)
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  • Principal Systems Engineer…

    Themis Insight (Fort Meade, MD)
    …for a bachelor's degree. + Proficient with Linux . Minimum of 2 years Linux system administration experience. + Experience with patching and upgrading ... Military expertise to every case. We are hiring a Principal Systems Engineer ( Linux ) to...systems into ongoing operations. Develops technical documentation. Develops system Architecture and system design documentation. Guides… more
    Themis Insight (12/19/25)
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  • Principal Linux Systems

    Northrop Grumman (Linthicum Heights, MD)
    …work of your career. Northrop Grumman Classified Solutions is seeking a well-qualified ** Linux Systems Administrator** to join its dynamic team of technical ... be limited to the following: + Perform as primary Linux Systems Administrator for a classified government...verbal format. + Maintain smooth operation of multi-user computer systems , including coordination with network, software, and system more
    Northrop Grumman (11/19/25)
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  • Principal Linux Systems

    Northrop Grumman (Linthicum Heights, MD)
    …to purchase hardware, software, and system components. + Perform as a Linux systems administrator for a classified government network and manage all aspects ... non-recurring efforts. + Support multiple networks while ensuring necessary administration tasks are completed in a timely manner. +...storage area network (SAN), and network attached storage (NAS) systems . + Strong Linux Operating System more
    Northrop Grumman (01/06/26)
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  • Sr Principal Linux Systems

    Northrop Grumman (Boulder, CO)
    …include but not be limited to the following: + Perform as primary Linux Systems Administrator for a classified government contract. + Communicate effectively ... Information and Digital Office (CIDO) organization is seeking a highly experienced **Senior Linux Server Admin ** to join its dynamic team of technical… more
    Northrop Grumman (01/07/26)
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  • Principal System Administrator…

    RTX Corporation (El Segundo, CA)
    …of our systems and support IT infrastructures around the world. **Sr. Principal System Administrators,** internally known as Sr. Principal Analyst, ... teams to support exciting, critical programs with classified information system capabilities. Success in this role means you can...problems. **What You Will Do** : + Provide IT systems administration in a heterogeneous Microsoft Windows… more
    RTX Corporation (12/09/25)
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  • Senior Systems Administrator - Windows/…

    Mount Sinai Health System (New York, NY)
    …The Administrator is the principal technology expert for Windows and Linux systems , and help support high-performance computing (HPC) environment in the ... job scheduler are preferred. **Responsibilities** + Design, develop, implement all system administration tasks, including hardware and software configuration and… more
    Mount Sinai Health System (12/22/25)
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  • Sentinel - Engineer / Principal Engineer…

    Northrop Grumman (Roy, UT)
    …and custom software in a security constrained environment + 2 years of experience with Linux or Cisco operating systems ** Principal Engineer Systems ... Defense Systems is seeking a **Engineer / Principal Systems Test Engineer** . This position...To Do** + Maintain smooth operation of multi-user computer systems , including coordination with network, software, and system more
    Northrop Grumman (11/27/25)
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  • Linux / AWS Systems Administrator…

    Northrop Grumman (Morrisville, NC)
    …Want You!** The Northrop Grumman Classified Solutions team is seeking an experienced ** Linux Systems Administrator** to join its dynamic team of technical ... system parameters and formats, ensures hardware and software systems compatibility and coordinates and/or modifies system ...limited to the following:** + Serve as a senior Linux Systems Administrator within an AWS cloud… more
    Northrop Grumman (11/15/25)
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  • Principal Storage Admin

    RTX Corporation (Mckinney, TX)
    …VMware, BackupExec, NetBackup, prior systems administration and networking administration experience, Windows or Linux administration , backup, and ... world. **What You Will Do** : + Administer, configure, and maintain storage systems (ie NetApp AFF/FAS and/or hybrid environments running ONTAP. + Manage storage… more
    RTX Corporation (01/10/26)
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  • Principal System Administrator

    BAE Systems (Nashua, NH)
    …to lift equipment (up to 40lbs) and work within controlled environments. **_In this Principal System Administrator position you will make impats in the following ... ways_** + Administer patch management for RHEL-based Linux systems , including vulnerability scanning, patch deployment, and compliance validation. + Install and… more
    BAE Systems (12/19/25)
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  • Principal /Sr. Principal HPC…

    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 ... Grumman Mission Systems (NGMS) is seeking a ** Principal or Sr. Principal HPC System...4 years additional experience in lieu of degree. + Linux systems administration proficiency +… more
    Northrop Grumman (12/05/25)
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  • Principal /Sr. Principal

    Northrop Grumman (Patuxent River, MD)
    …or be willing to relocate to the NAS Patuxent River area. Basic Qualifications for a Principal System Admin : + bachelor's degree with 5 years of experience; ... and weekends as needed. Basic Qualifications for a Senior Principal System Admin : + Bachelor's...Windows AD, LDAP, VMWare, and knowledge of SAN storage systems . + Linux Operating System more
    Northrop Grumman (12/12/25)
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  • Principal System Administrator

    DCCA (Annapolis Junction, MD)
    …and a dedication to excellence. Key Tasks: Candidate will be responsible for providing Linux System Administration support for the program. Along with ... Principal System Administrator Location Annapolis Junction,...Education / Certifications: Fifteen (15) years of experience providing System Administration support and Bachelor's Degree in… more
    DCCA (11/17/25)
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  • Principal System Administrator

    RTX Corporation (Tucson, AZ)
    …integrity of our systems and support IT infrastructures around the world. ** Principal System Administrators** , internally known as Principal Analyst, ... teams to support exciting, critical programs with classified information system capabilities. Success in this role means you can...for a security clearance. + Must have Windows or Linux experience systems administration experience.… more
    RTX Corporation (12/29/25)
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  • Principal /Sr Principal HPC…

    Northrop Grumman (Jessup, MD)
    …lifecycle + Demonstrated experience analyzing and responding to customer requirements + Strong Linux systems administration proficiency (RHEL nice to have) + ... either a Principal Level or a Sr. Principal Level. **Basic qualifications: Principal Systems...experience analyzing and responding to customer requirements + Strong Linux systems administration proficiency (RHEL… more
    Northrop Grumman (12/05/25)
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  • Sr Principal Systems Administrator

    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 Aurora, ... used RAID-levels + Solid understanding of remediating security vulnerabilities; Experience hardening Linux systems in accordance with RMF and STIGs + Identity… more
    Northrop Grumman (11/13/25)
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  • Principal System Administrator

    RTX Corporation (Mckinney, TX)
    …of our systems and support RTX's IT infrastructure around the world. ** Principal System Administrators** , internally known as Principal Analyst, ... solve complex IT infrastructure problems. **What You Will Do:** + Provide IT systems administration in a heterogeneous Microsoft Windows and Redhat Enterprise … more
    RTX Corporation (01/10/26)
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  • Sr. Principal Cyber Systems Engineer

    Northrop Grumman (Redondo Beach, CA)
    …of history, they're making history. Northrop Grumman has an opening for **Sr. Principal Cyber Systems Engineer** to join the Special Test Equipment Engineering ... The roles and responsibilities of this position include: + Administration of Linux (RHEL/CENTOS) 7/8 servers and...Experienced in the implementation of CMMC/DFARS/RMF/DOD Security Controls on Linux and Windows operating systems (ie Windows… more
    Northrop Grumman (11/26/25)
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