• Principal Systems Engineer - Military Operations…

    Sierra Nevada Company, LLC (Lone Tree, CO)
    …programming or standard tools such as Matlab, Python, and C++. + **Active Top Secret US Security Clearance with SCI eligibility US Security Clearance ... more (https://www.sncorp.com/careers/total-rewards/) . **IMPORTANT NOTICE:** This position requires current/active Top Secret with SCI eligibility US Security… more
    Sierra Nevada Company, LLC (08/08/25)
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  • Technical Systems Lead Integrator

    Lockheed Martin (Littleton, CO)
    …NoMagic MagicDraw\. * Familiarity with Lockheed Martin Processes and Procedures * Active Secret or Top Secret DoD Clearance **Security Clearance Statement:** ... This position requires a government security clearance, you must be a US Citizen...must be a US Citizen for consideration\. **Clearance Level:** Top Secret **Other Important Information You Should… more
    Lockheed Martin (08/08/25)
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  • Configuration Management, Senior

    Lockheed Martin (Littleton, CO)
    …and a Secret Security Clearance with ability to obtain and maintain a Top Secret Security clearance\. **Desired Skills:** * Able to determine CDM contractual ... security clearance, you must be a US Citizen for consideration\. **Clearance Level:** Top Secret **Other Important Information You Should Know** **Expression of… more
    Lockheed Martin (08/08/25)
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  • Senior Software Engineer, Embedded

    Lockheed Martin (Littleton, CO)
    …have active Secret clearance with the ability and desire to obtain a Top Secret clearance which requires US Citizenship **Desired Skills:** * Experience with ... security clearance, you must be a US Citizen for consideration\. **Clearance Level:** Top Secret **Other Important Information You Should Know** **Expression of… more
    Lockheed Martin (07/31/25)
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  • Reentry Systems Engineer

    Lockheed Martin (Littleton, CO)
    …US Citizenship is required **Desired Skills:** * Demonstrated ability to learn * Existing Top Secret Clearance with T5 investigation and/or Q clearance a huge ... security clearance, you must be a US Citizen for consideration\. **Clearance Level:** Top Secret **Other Important Information You Should Know** **Expression of… more
    Lockheed Martin (07/30/25)
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  • Nissc 3 Opportunities

    General Dynamics Information Technology (Peterson AFB, CO)
    …**Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret /SCI **Public Trust/Other Required:** None **Job Family:** IT ... Technical Writer/Editor Test Engineer Training Specialist Warehouse Manager **Qualifications:** + Active Secret up through Top Secret /SCI clearance +… more
    General Dynamics Information Technology (07/22/25)
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  • DevSecOps Engineer III

    Sierra Nevada Company, LLC (Lone Tree, CO)
    …active Secret US Security Clearance with the ability to obtain a Top Secret with SCI eligibility required** **Qualifications We Prefer:** + Certification + ... more (https://www.sncorp.com/careers/total-rewards/) . **IMPORTANT NOTICE:** This position requires current/active Top Secret with SCI eligibility US Security… more
    Sierra Nevada Company, LLC (07/19/25)
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  • Systems Engineer Staff, Weapon System Performance…

    Lockheed Martin (Littleton, CO)
    …team collaboration, communication and presentation skills * Active or Current Top Secret security clearance **Security Clearance Statement:** This position ... requires a government security clearance, you must be a US Citizen...must be a US Citizen for consideration\. **Clearance Level:** Top Secret **Other Important Information You Should… more
    Lockheed Martin (07/18/25)
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  • Systems Integration Engineer Staff

    Lockheed Martin (Littleton, CO)
    …* Active DoD Secret security clearance with ability to obtain a Top Secret **Desired Skills:** * Degree in Systems, Electrical, or Mechanical Engineering ... security clearance, you must be a US Citizen for consideration\. **Clearance Level:** Top Secret **Other Important Information You Should Know** **Expression of… more
    Lockheed Martin (07/12/25)
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  • Senior Linux System Administrator

    GovCIO (Denver, CO)
    …GovCIO is currently hiring for an experienced Linux System Administrator with an active Secret clearance to join an Operations team. This position will be located in ... Security, applying updates and remediating vulnerabilities (or commensurate experience) Active Secret Clearance Required with ability to obtain and hold DEA… more
    GovCIO (08/08/25)
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