• Sr. Spec, Systems Engineering (Mission Systems)

    L3Harris (Greenville, TX)
    … with SCI. + Must be a US Citizen. Preferred Additional Skills: + Active Top Secret with SCI. + Security + Certification. + RC-135 Operator interfaces. ... sea and cyber domains in the interest of national security . Job Title: Sr. Specialist , Systems Engineer...experience with Operator interfaces. + Must have an active Secret clearance at the time of hire… more
    L3Harris (10/30/25)
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  • TDY Data Center Security Monitor

    Amentum (Austin, TX)
    …ensuring that our nation's most precious assets are protected. As a physical security specialist , you will be provided with exceptional training and growth ... playing a critical role in the workplace and mission security for a US intelligence community customer. If ...sensitive documents. **Basic Qualifications:** . Must have an Active TS /SCI w/Poly US Government Clearance . Note: US… more
    Amentum (10/28/25)
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  • Systems Engineer Senior - Level 3

    Lockheed Martin (Fort Worth, TX)
    …last five years with ability to or in the process of obtaining a Top Secret SAR/SAP clearance \. **Desired Skills:** Experience with digital engineering ... with different engineering disciplines to derive and decompose requirements\. ** Security Clearance Statement:** This position requires a..., you must be a US Citizen for consideration\. ** Clearance Level:** Secret with Investigation or CV… more
    Lockheed Martin (10/10/25)
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  • Sr. Spec, Systems Engineer (Avionics)

    L3Harris (Waco, TX)
    …at the time of hire with the ability to obtain and maintain a DoD Top Secret with (SCI) Security Clearance . . Must be a US Citizen. #LI-AH1 L3Harris ... sea and cyber domains in the interest of national security . Job Title: Sr. Specialist , Systems Engineer...of our positions require the ability to obtain a security clearance . Security clearances may… more
    L3Harris (10/03/25)
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  • Lead, Integration & Test Engineer

    L3Harris (Greenville, TX)
    Clearance at the time of hire with the ability to obtain and maintain a TS with SCI security clearance . + Must be a US Citizen. Preferred Additional ... Job Schedule: 1st Shift 9/80 Job Description: The Senior Specialist , Integration & Test Engineer is responsible for supporting...of our positions require the ability to obtain a security clearance . Security clearances may… more
    L3Harris (11/20/25)
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  • Join Our Talent Network - Counter Threat Finance…

    Amentum (Houston, TX)
    …of relevant experience OR Bachelor's/Master's with 5+ years of experience. + Active TS /SCI clearance (US citizenship required). + Background in Counter Threat ... to address their most significant and complex challenges in science, security and sustainability. Our people apply undaunted curiosity, relentless ambition and… more
    Amentum (10/17/25)
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