• Principal Windows Systems Administrator

    RTX Corporation (El Segundo, CA)
    …Person, or Immigration Status Requirements:** Active and transferable US government issued security clearance is required prior to start date.​ US citizenship is ... required, as only US citizens are eligible for a security clearance​ ** Security Clearance:** Top Secret - Current At Raytheon, the foundation of everything we do… more
    RTX Corporation (11/18/25)
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  • Systems Administrator III

    Integrits Corporation (Edwards AFB, CA)
    …for today's missions and tomorrow's global challenges. A Systems Administrator II evaluates system specifications, configures system, establishes standards, ensures ... maintenance, application and OS patches and updates, antivirus updates, security /event log review and analysis, network documentation, tape backup operations,… more
    Integrits Corporation (01/06/26)
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  • Systems Administrator (GEODSS) - Diego…

    Serco (San Diego, CA)
    …$67889.77 - $113149.62 **Position Description & Qualifications** Looking for a Systems Administrator opportunity at a place you can make a difference every day? ... GEODSS information systems, IT equipment, mission system software, communications/ security equipment and TEMPEST systems; perform contingency operator duties when… more
    Serco (01/06/26)
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  • Linux Systems Administrator , Sr / Secret…

    Lockheed Martin (Sunnyvale, CA)
    …facilities that span more than 70 countries\. We are hiring a Linux System Administrator , Sr to support daily IT operations in our Sunnyvale, CA facility\. This ... Bash and PowerShell\) * Experience with vulnerability remediation and security management \(i\.e\., system hardening, log management, configuration management… more
    Lockheed Martin (11/20/25)
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  • System Administrator 3 - Sunnyvale

    M. C. Dean (San Jose, CA)
    …With over 7,000 employees, our capabilities span electrical, electronic security , telecommunications, life safety, automation and controls, audiovisual, and IT ... and test Physical Access Control, CCTV, PSIM and other electronic security systems and support implementation, troubleshooting and maintenance of Information… more
    M. C. Dean (11/15/25)
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  • Linux Systems Administrator 1/2

    Northrop Grumman (Redondo Beach, CA)
    …they are making history. Northrop Grumman Enterprise Services is seeking a **Linux Systems Administrator .** This role can be performed by a level 1 or level 2 (entry ... DoD 8570 IAM Level 1 certification (CGRC, GSLC, or Security + CE) within 6 months. + Candidates must have...+ Candidates must have an active DOD Secret level security clearance **Basic Qualifications for a Level 2** :… more
    Northrop Grumman (12/19/25)
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  • Network System Administrator

    ManTech (Los Angeles, CA)
    **MANTECH** seeks a motivated, career and customer-oriented **Network System Administrator ** **III** to join our team in **Los Angeles, CA.** The primary function is ... & SSL. + Maintain file servers, Firewalls, network access, Security Monitoring Systems and system documentation as required. +...for Information Assurance Technician Level 2 such as CompTIA Security + CE, within 6 months of the date… more
    ManTech (12/17/25)
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  • System Administrator 1

    M. C. Dean (San Jose, CA)
    …With over 7,000 employees, our capabilities span electrical, electronic security , telecommunications, life safety, automation and controls, audiovisual, and IT ... maintain, and test Physical Access Control, CCTV, PSIM and other electronic security systems and support implementation, troubleshooting and maintenance of Physical … more
    M. C. Dean (11/15/25)
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  • Senior Cloud Administrator - Containers,…

    Cognizant (Sacramento, CA)
    **About the role** As a Cloud Administrator specializing in Containers and DevOps, you will make an impact by building secure, scalable, and highly available cloud ... the organization. You will be a valued member of the Cloud Infrastructure and Security team and work collaboratively with the Senior Manager. **In this role, you… more
    Cognizant (01/07/26)
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  • System Administrator - Active Secret…

    ENS Solutions (San Diego, CA)
    This role is contingent upon Contract Award The System Administrator supports secure and resilient operations of PKI infrastructure and associated systems for an ... operating procedures (SOPs). + Ensure continuous compliance with RMF security controls and support the generation and maintenance of...hold a DoD 8570 IAT Level II certification (eg, Security + CE). + Familiarity with tools such as STIG… more
    ENS Solutions (12/27/25)
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