• Principal Linux Systems Administrator

    RTX Corporation (El Segundo, CA)
    …collaborates with many teams to support fast-paced, critical programs with classified information system capabilities. Success in this role means you can ... with teams to support exciting, critical programs with classified information system capabilities. Success in this role...security clearance. + Must have experience with Linux systems administration + Experience with one of the following:… more
    RTX Corporation (09/09/25)
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  • Principal Windows System Administrator

    RTX Corporation (El Segundo, CA)
    …collaborates with many teams to support fast-paced, 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 and Redhat...Security + CE or equivalent certification) and an Operating System Certification. Ability to obtain 3 months. + Direct… more
    RTX Corporation (10/03/25)
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  • Systems Engineer Stf - Level 4

    Lockheed Martin (Palmdale, CA)
    …passionate about driving innovation and ensuring the success of mission\-critical systems \. **Further Information About This Opportunity** This position is ... position is for an experienced member of an ADP Systems Engineering team, providing support across the entire product...processes, have experience leading elements of a product or system , and have an ability to think creatively and… more
    Lockheed Martin (08/01/25)
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  • Systems Engineer Sr Stf - Level 5

    Lockheed Martin (Palmdale, CA)
    …passionate about driving innovation and ensuring the success of mission\-critical systems \. **Further Information About This Opportunity** This position is ... processes, have experience leading elements of a product or system , and have an ability to think creatively and...tools within the confines of a Risk Managed Framework \( RMF \) \- Experience with Mission Systems applications… more
    Lockheed Martin (07/16/25)
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  • UNIX Systems Engineer

    GovCIO (Sacramento, CA)
    …assigned tasks. + 3+ yrs experience in patch management with understanding how toapply security updates to systems via YUM and RPM. + 3+ yrs experience ... patch management and Security TechnicalImplementation Guides (STIG), Security Requirement Guides (SRG), RMF , SecurityControl Assessor-Validator (SCA-V),… more
    GovCIO (09/24/25)
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  • Sr. Specialist Cyber Infrastructure Engineer

    L3Harris (Carlsbad, CA)
    …Top Secret post-hire Qualifications: + Bachelor's degree in Computer Science, Information Systems , Cybersecurity, or related discipline; advanced degree or ... for patch automation, compliance enforcement, and lifecycle sustainment of systems . + Lead NIST RMF activities by...+ Minimum of 10 years of progressive IT and security experience, with a proven record in systems… more
    L3Harris (09/25/25)
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  • IT Systems Administrator

    ManTech (Lompoc, CA)
    … systems and virtual environments, focusing on integration, troubleshooting, and system administration in support of national security space operations. You ... MANTECH seeks a motivated, career- and customer-oriented **IT Systems Administrator / Software Engineer** to join our...through its online applicant system , please email us at ###@mantech.com and provide your name and contact information… more
    ManTech (09/27/25)
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  • Linux/Windows Senior Systems Administrator

    Lockheed Martin (San Diego, CA)
    …Martin is looking for highly motivated, experienced individuals to perform network/ system administration and support on a variety of complex platforms supporting ... BMD and other DoD related activities\. System Administration activities include \(but are not limited to\):...compliant hardening * Configuration, fine tuning, and maintenance of security tools such as Nessus, ACAS, Splunk, etc\. *… more
    Lockheed Martin (07/12/25)
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  • Principal Systems Engineer

    SAIC (El Segundo, CA)
    …that enable capability delivery to meet warfighter needs. **JOB DUTIES:** + Provide Systems Engineering expertise across the entire system lifecycle from concept ... **Description** SAIC's Horizon program is seeking a Systems Engineer to support the US Space Force...Entry Points, and cloud infrastructure. + Ensure network and system solutions meet DoD Risk Management Framework ( RMF… more
    SAIC (08/15/25)
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  • Engineer (Tactical Network - CANES) | Active…

    General Dynamics Information Technology (CA)
    …evidence. + Harden Windows/Linux and virtualized hosts (VMware ESXi/NSX) using Defense Information Systems Agency (DISA) Security Technical Implementation ... Family:** Professional Engineering **Skills:** Network Engineering, Systems Engineering,Windows System Administration **Certifications:** CompTIA Security + CE |… more
    General Dynamics Information Technology (09/28/25)
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