• Electrical Engineer III - Lead

    Sierra Nevada Company, LLC (Lone Tree, CO)
    …diagrams and installation drawings + **The ability to obtain and maintain a Secret US Security Clearance is required** **Qualifications We Prefer:** + Experience ... NOTICE:** This position requires the ability to obtain and maintain a Secret US Security Clearance. US Citizenship status is required as this position needs an… more
    Sierra Nevada Company, LLC (10/16/25)
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  • Systems Engineer III

    Sierra Nevada Company, LLC (Lone Tree, CO)
    …vulnerabilities and threats + Experience implementing and maintaining compliance controls + **ISSO Security + Certification is required** + **An active Secret US ... 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 (09/18/25)
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  • Principal Software Engineer

    Sierra Nevada Company, LLC (Lone Tree, CO)
    …system architecture making an impact on a software engineering team + Active Top Secret US Security Clearance w/ SCI eligibility is required **Qualifications We ... (https://www.sncorp.com/careers/total-rewards/) . **IMPORTANT NOTICE:** This position requires current/active Top Secret with SCI eligibility US Security Clearance.… more
    Sierra Nevada Company, LLC (08/08/25)
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  • Sr Project Engineer - Integrated Digital…

    Sierra Nevada Company, LLC (Lone Tree, CO)
    …setting up server rooms + **The ability to obtain and maintain a Top Secret US Security Clearance is required** **Qualifications We Prefer:** + Experience with ... This position requires the ability to obtain and maintain a Top Secret US Security Clearance. US Citizenship status is required as this position needs an… more
    Sierra Nevada Company, LLC (07/29/25)
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  • GPS IIF Navigation Payload Systems Engineer

    The Boeing Company (Schriever AFB, CO)
    …for this position. ** Security Clearance** This position requires an active US Secret Security Clearance (US Citizenship Required). (A US Security ... your future with us. The Boeing Defense, Space, and Security (BDS), Space, Intelligence & Weapon Systems (SI&WS) division,...seeking a **Global Positioning System (GPS) Navigation Payload Systems Engineer (Level 2 or Level 3).** This position will… more
    The Boeing Company (10/24/25)
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  • Mid Career Cybersecurity Engineer

    Lockheed Martin (Littleton, CO)
    **Description:** You will be the Mid\-Career Cybersecurity Engineer for the Cybersecurity team which is responsible for applying an interdisciplinary, collaborative ... the lifecycle\. **What You Will Be Doing** As the Mid\-Career Cybersecurity Engineer , you will be responsible for developing System Cyber architecture to mitigate… more
    Lockheed Martin (10/22/25)
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  • Associate / Staff Systems Engineer

    SciTec (Boulder, CO)
    …skills Candidates who have any of the following skills will be preferred + Current Secret or higher DoD security clearance + 2 or more years of relevant ... technologies and scientific instrumentation capabilities in support of National Security and Defense. SciTec supports customers throughout the Department of… more
    SciTec (10/21/25)
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  • Sr. Software Engineer

    Leidos (Aurora, CO)
    **Description** Leidos National Security Sector combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security ... technologies, and tactics to keep pace with an ever-evolving security landscape and succeed in their pursuit to protect...Area, is currently seeking a highly motivated Sr. Software Engineer for the Chinook Program. The Chinook Program delivers… more
    Leidos (10/05/25)
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  • Junior Software Engineer - TS/SCI w/ Poly

    Parsons Corporation (Denver, CO)
    …+ High Performance Computing: CUDA/GPU, Grid Systems, Parallel Processing, Threading ** Security Clearance Requirement:** An active Top Secret SCI w/Polygraph ... Blue Ridge Envisioneering is seeking qualified candidates to fill a **Software Engineer ** position at our Denver, CO location. Blue Ridge Envisioneering, a Parsons… more
    Parsons Corporation (09/24/25)
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  • Sr RF Engineer

    Sierra Nevada Company, LLC (Lone Tree, CO)
    …systems: Electronic Warfare, ELINT/SIGINT/ESM, Radar, Signal Processing + An active Top Secret US Security Clearance is required **Qualifications We Prefer:** + ... humanity through technology and imagination! As a Sr RF Engineer , you will be using your skills and expertise...processing. The ISR (Intelligence, Surveillance & Reconnaissance), Aviation, and Security (IAS) business area is a leader in ISR… more
    Sierra Nevada Company, LLC (09/23/25)
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