• Principal Systems Software Engineer

    Sierra Nevada Company, LLC (Plano, TX)
    …Experience + Modeling and Simulation + The ability to obtain and maintain a Secret US Security Clearance is required **Qualifications We Prefer:** + Working ... . **IMPORTANT NOTICE:** This position requires the ability to obtain and maintain a Secret US Security Clearance. US Citizenship status is required as this… more
    Sierra Nevada Company, LLC (11/20/25)
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  • Systems Engineer II

    Sierra Nevada Company, LLC (Plano, TX)
    …and management strategies, and Verification and Validation (V&V) principles + An active Secret US Security Clearance is required **Qualifications We Prefer:** + ... more (https://www.sncorp.com/careers/total-rewards/) . **IMPORTANT NOTICE:** This position requires current/active Secret US Security Clearance. US Citizenship status… more
    Sierra Nevada Company, LLC (11/05/25)
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  • Tanium Engineer

    CACI International (Lackland AFB, TX)
    …relevant field may be substituted for 5 years of relevant experience). + Current Secret security clearance + Proficiency in Tanium platform and its core modules ... Tanium Engineer Job Category: Information Technology Time Type: Full...Time Type: Full time Minimum Clearance Required to Start: Secret Employee Type: Regular Percentage of Travel Required: Up… more
    CACI International (11/20/25)
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  • Scientist, RF Systems Advanced Concept…

    L3Harris (Plano, TX)
    …10+ years of experience executing or participating in DoD/government programs * Active Secret Security Clearance. Preferred Additional Skills: * Master or Doctor ... security . Job Title: Scientist, RF Systems Advanced Concept Engineer - Plano TX/ Clifton NJ / Palm Bay,...- Plano TX/ Clifton NJ / Palm Bay, FL- Secret Job Code: 30283 Job Location: Palm Bay, FL,… more
    L3Harris (10/26/25)
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  • Sr. Specialist, Mechanical Engineer

    L3Harris (Greenville, TX)
    …basic aircraft systems + Position requires the ability to obtain and maintain a DOD Secret Security Clearance at the Secret level which requires US ... sea and cyber domains in the interest of national security . Job Title: Sr. Specialist, Mechanical Engineer Job Code : 29178 Job Location: Greenville, TX (100%… more
    L3Harris (10/02/25)
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  • F-16 Avionics Field Service Engineer Staff…

    Lockheed Martin (Fort Worth, TX)
    …to classified information\. * Must be a US citizen\. Must have an at minimum an Interim Secret Security Clearance\. Must be able to obtain a Final Secret ... Sustainment \(AFS\) team as an F\-16 Avionics Field Service Engineer \(FSE\) to support the Taiwan Air Force at...* Applicants selected will be subject to a government security investigation and must meet eligibility requirements for access… more
    Lockheed Martin (11/07/25)
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  • Software Engineer

    Lockheed Martin (Houston, TX)
    …as C or C\+\+\. Must be a US Citizen; this position will require Final Secret government security clearance prior to starting\. This position is located at a ... Space is a critical domain, connecting our technologies, our security and our humanity\. While others view space as...Lockheed Martin Space is seeking a full time Software Engineer \. In this role, you will support the software… more
    Lockheed Martin (11/06/25)
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  • Principal Systems Engineer (Onsite)

    RTX Corporation (Richardson, TX)
    …is required, as only US citizens are eligible for a security clearance​ ** Security Clearance:** DoD Clearance: Secret **Are you ready to design the future of ... US Person, or Immigration Status Requirements:** Active and transferable US government issued security clearance is required prior to start date.​ US citizenship… more
    RTX Corporation (10/01/25)
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  • Software Engineer , DevOps Lead

    Lockheed Martin (Fort Worth, TX)
    …The vehicle management software team is looking for an experienced software engineer to help lead a team to implement modern infrastructure and platform ... passion for airplanes and experience as an embedded software engineer and DevOps engineer and use it...at a facility that requires special access and a Secret clearance updated within the last 5 years to… more
    Lockheed Martin (09/18/25)
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  • Systems Integration & Test Engineer Lead,…

    Lockheed Martin (Grand Prairie, TX)
    …requires special access\. The selected candidate must have the ability to obtain a Secret Security Clearance\. An Interim Secret Clearance is required to ... **Description:** Lockheed Martin is a global security and aerospace company that employs approximately 114,000...5\+ years of experience\. Ability to obtain an Interim Secret is required to start, therefore you must be… more
    Lockheed Martin (11/01/25)
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