• Principal Cloud Solution Architect - CTJ…

    Microsoft Corporation (Washington, DC)
    …helping enterprise customers accelerate their digital transformation. In this senior , customer-facing role, you'll lead strategic technical engagements, advise ... - including appropriately qualified, experienced, and certified personnel (with necessary security clearances or otherwise) are available as needed to meet USG… more
    Microsoft Corporation (09/03/25)
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  • Sr Principal Linux Systems Administrator…

    Northrop Grumman (Melbourne, FL)
    …Possible is our commitment to missions. In rapidly changing global security environments, Northrop Grumman brings informed insights and secure technological ... The Northrop Grumman Classified Solutions team is seeking a senior **Linux Systems Administrator** to join its dynamic team...user and computer accounts and modify file permissions and security access lists. + Test new releases of products… more
    Northrop Grumman (08/08/25)
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  • Principal Modeling, Simulation & Analysis…

    RTX Corporation (Tucson, AZ)
    …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:** DoD Clearance: Secret...the simulation products of a specific program, and assist Senior Modeling Engineers in the preparation of detailed plans,… more
    RTX Corporation (08/08/25)
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  • Sr Principal HPC Linux Systems…

    Northrop Grumman (Redondo Beach, CA)
    …Possible is our commitment to missions. In rapidly changing global security environments, Northrop Grumman brings informed insights and secure technological ... The Northrop Grumman Classified Solutions team is seeking a senior **Linux Systems Administrator** to join its dynamic team...of the system. + Makes recommendations to improve the security and usability of the system. + Occasional travel… more
    Northrop Grumman (09/11/25)
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  • Principal SRE

    Palo Alto Networks (Santa Clara, CA)
    …(TM) is a revolutionary and dynamic company creating next generation network security products. If you are a motivated, intelligent, creative, and hardworking ... This position is responsible for Palo Alto Networks' (PANW) network and security infrastructure for all enterprise, partner, and customer facing services. A… more
    Palo Alto Networks (09/06/25)
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  • RF Engineer Principal

    General Dynamics Information Technology (Fairfax, VA)
    …experience **US Citizenship Required:** Yes **Job Description:** Network Engineer / Network Engineer Senior / Network Engineer Advisor GDIT is seeking Junior up to ... Senior level Network Engineers to help support our upcoming...skills + Excellent written and oral communication skills​ * Security Clearance Level: Active DoD Secret Level Clearance required… more
    General Dynamics Information Technology (08/28/25)
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  • Materials Planning SIOP, Principal

    RTX Corporation (Goleta, CA)
    …Status Requirements:** The ability to obtain and maintain a US government issued security clearance is required.​ US citizenship is required, as only US citizens are ... eligible for a security clearance ** Security Clearance:** DoD Clearance: Secret...across the function. This work provides high visibility to senior operations leadership and requires adaptability to shifting business… more
    RTX Corporation (09/11/25)
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  • Systems Engineer, Staff Principal

    BigBear.ai (Columbia, MD)
    …Most At BigBear.ai, we're solving some of the most complex challenges in national security and intelligence. We're looking for a Level 3 IT Engineer who thrives in ... is your opportunity. What you will do As a senior IT Engineer, you'll play a key role in...Architect and enhance complex IT systems that support national security missions. + Lead and contribute to large-scale projects,… more
    BigBear.ai (08/29/25)
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  • Raytheon Vision Systems - Principal Test…

    RTX Corporation (Goleta, CA)
    …Status Requirements:** The ability to obtain and maintain a US government issued security clearance is required.​ US citizenship is required, as only US citizens are ... eligible for a security clearance ** Security Clearance:** DoD Clearance: Secret...Systems Integration and Test Department is seeking an experienced Senior Test Engineer with expertise in airborne electro-optical and… more
    RTX Corporation (08/26/25)
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  • Fire Protection Principal Specialist

    RTX Corporation (Marlborough, MA)
    …Status Requirements:** The ability to obtain and maintain a US government issued security clearance is required.​ US citizenship is required, as only US citizens are ... eligible for a security clearance ** Security Clearance:** DoD Clearance: Secret...Be involved in system evaluations and create recommendations to senior management based on schedule, cost, applicable codes and… more
    RTX Corporation (08/14/25)
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