• Sr . Principal System Admin

    RTX Corporation (Tucson, AZ)
    …Will Do:** + Experience with Linux architecture, deployment, administration , networking, performance monitoring/tuning, security hardening, and troubleshooting. + ... DHCP, DNS, NIS, LDAP, CIFS, NFS, Samba and *NIX system security. + Experience with infrastructure backup, restore, disaster...for a security clearance. + Experience supporting Linux operating systems . + Experience with but not limited to, Active… more
    RTX Corporation (08/08/25)
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  • Sr . Principal Linux Systems

    RTX Corporation (Tucson, AZ)
    …solve complex IT infrastructure problems. **Responsibilities to Anticipate:** + Provide IT systems administration in a heterogeneous Redhat Enterprise Linux and ... meaningful problems that create a safer, more secure world. ** Sr Principal Linux System Administrator** in infrastructure...eligible for a security clearance. + Must have Linux systems administration experience + Must have Leadership… more
    RTX Corporation (08/08/25)
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  • Sr . 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 ... to high scope and complexity to include the integration of hardware and operating systems (OS). + Must be able to obtain Department of Defense Directive (DoDD) 8140… more
    RTX Corporation (06/26/25)
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  • Sr . Manager, Facilities Electrical…

    RTX Corporation (Tucson, AZ)
    …and electrical distribution equipment Sizing. + Industrial controls and interlock systems . + Electrical power distribution system engineering analysis including ... RTX Corporation is an Aerospace and Defense company that provides advanced systems and services for commercial, military and government customers worldwide. It… more
    RTX Corporation (07/03/25)
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  • Senior Information System Security…

    RTX Corporation (Tucson, AZ)
    …investigations, or Border Patrol + Project or program management, office management, senior administration , or account management **Qualifications We Prefer** + ... that create a safer, more secure world. Our cybersecurity team is seeking a ** Senior Information Systems Security Officer (ISSO)** to support our team **100%… more
    RTX Corporation (08/02/25)
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  • Senior Linux System Administrator

    RTX Corporation (Tucson, AZ)
    …integrity of our systems and support IT infrastructures around the world. ** Senior System Administrator** , internally known as Senior 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 (07/18/25)
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  • Senior Principal Systems Engineer:…

    RTX Corporation (Tucson, AZ)
    …problems that create a safer, more secure world. Raytheon is seeking a well-qualified ** Senior Principal System Security Engineer (SSE) - P5** to join the ... system impacts, and effectiveness + Provide leadership in support of administrative tasking such as system documentation, account management, schedule… more
    RTX Corporation (08/01/25)
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  • Senior Systems Administrator

    RTX Corporation (Tucson, AZ)
    …integrity of our systems and support IT infrastructures around the world. ** Senior System Administrator** , internally known as Senior Analyst, ... are eligible for a security clearance​ **Security Clearance:** DoD Clearance: Secret ** Senior System Administrator Tucson, AZ. Must have an active secret… more
    RTX Corporation (07/24/25)
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  • High Performance Computing (HPC) System

    RTX Corporation (Tucson, AZ)
    …Secret ** System Administrator, High Performance Computing (HPC) - P2** ** Senior Analyst Level** **Raytheon Digital Technology (DT)** **Tucson AZ - Onsite Role** ... 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 (07/13/25)
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  • Senior Systems Engineer…

    RTX Corporation (Tucson, AZ)
    …problems that create a safer, more secure world. Raytheon is seeking a ** Senior Systems Security Engineer Anti-Tamper/Program Protection (P3)** to join our elite ... Systems Security Engineering (SSE) team for the ...customer to define SSE requirements, solutions, trades, costs, implementation, system impacts and effectiveness + Support developing plans and… more
    RTX Corporation (08/08/25)
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