• Senior Linux System

    GovCIO (Phoenix, AZ)
    **Overview** GovCIO is currently hiring for an experienced Linux System Administrator with an active Secret clearance to join an Operations team. This ... libraries + Advanced Linux System Administration, Configuration, and System Security + Advanced systems troubleshooting skills + Excellent written and… more
    GovCIO (11/07/25)
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  • Unix/ Linux Administrator

    Link Solutions Inc (Sierra Vista, AZ)
    …+ Active DoD Security Clearance + Non- remote (relocation incentive available) The Unix/ Linux Administrator will provide services in support of the US Army ... for CMMI ML3 for Services and Development. Link Solutions Inc. is seeking a Unix/ Linux Administrator (Senior-Level) to join our team in Sierra Vista, Arizona. +… more
    Link Solutions Inc (10/28/25)
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  • Principal System Administrator

    RTX Corporation (Tucson, AZ)
    …mission of making the world a safer place. We are currently seeking a Principal Systems Administrator that will be working 100% onsite in a highly collaborative, ... multi-platform and multi-disciplined environment. The Systems Administrator is required to have an...day-to-day activities include but are not limited to: RedHat Linux server management; storage management; file server management; access… more
    RTX Corporation (10/15/25)
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  • System Administrator , High…

    RTX Corporation (Tucson, AZ)
    …are eligible for a security clearance​ **Security Clearance:** Secret - Current ** System Administrator , High Performance Computing (HPC) - P2** **Senior Analyst ... to lead and support the engineering community. + Perform OS tuning to maximize system performance on high performance computing systems . Work across DT functions… more
    RTX Corporation (10/24/25)
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  • Senior System Administrator

    RTX Corporation (Tucson, AZ)
    …our systems and support IT infrastructures around the world. **Senior System Administrator ** , internally known as Senior Analyst, Information Workplace ... Services collaborate and support exciting, critical programs with classified information system capabilities. Success in this role means you can develop, implement,… more
    RTX Corporation (10/22/25)
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  • Principal System Administrator

    RTX Corporation (Tucson, AZ)
    …technology solutions to prevent security threats, protect the integrity of our systems and support RTX's IT infrastructure around the world. **Principal System ... with many teams to support fast-paced, critical programs with classified information system capabilities. Success in this role means you can develop, implement and… more
    RTX Corporation (10/22/25)
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  • Unix Administrator

    TekSynap (AZ)
    … Professional Institute Linux Essentials + Microsoft Certified Azure Administrator Associates **Experience** + Seven (7) years systems administration ... + Designs, configures, implements, and maintains UNIX hardware and operating system environments including AIX, HP-UX, and Solaris. Optimizes backup processes;… more
    TekSynap (11/15/25)
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  • Senior System Administrator

    RTX Corporation (Tucson, AZ)
    …technology solutions to prevent security threats, protect the integrity of our systems and support Raytheon IT infrastructure around the world. Senior System ... with a many teams to support fast-paced, critical programs with classified information system capabilities. Success in this role means you are able to develop,… more
    RTX Corporation (10/15/25)
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  • Principal System Administrator

    RTX Corporation (Tucson, AZ)
    …technology solutions to prevent security threats, secure the integrity of our systems and support IT infrastructures around the world. **Principal System ... team 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 and Redhat… more
    RTX Corporation (10/29/25)
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  • Senior Systems Administrator

    RTX Corporation (Tucson, AZ)
    …a safer, more secure world. **What You Will Do** : + Provide IT systems administration in a heterogeneous Microsoft Windows and Redhat Enterprise Linux ... environment. + Experience with Windows Server internals or Linux fundamentals to include DNS, DHCP, AD, and server...complexity to include the integration of hardware and operating systems (OS). + Must be able to obtain Department… more
    RTX Corporation (11/13/25)
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