• Mid Career Cybersecurity Engineer

    Lockheed Martin (Littleton, CO)
    …clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/ Poly **Other Important Information You Should Know** **Expression ... special access\. The selected candidate must possess an active Top Secret clearance with SCI ...Workforce qualification and certification requirements + Possess an active TS / SCI security clearance with an investigation within… more
    Lockheed Martin (10/22/25)
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  • Cyber Software Test Engineer

    Lockheed Martin (Denver, CO)
    …clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/ Poly **Other Important Information You Should Know** **Expression ... CITIZEN** - The selected candidate must possess an active Top Secret clearance with SCI ... eligibility to start\. \#LI\-CS1 **Basic Qualifications:** + **Active TS clearance with SCI eligibility required prior… more
    Lockheed Martin (10/10/25)
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  • Systems Integration and Test Engineer Sr.

    Lockheed Martin (Littleton, CO)
    …clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/ Poly **Other Important Information You Should Know** **Expression ... and must meet eligibility requirements for access to classified information \. \#LI\-CS1 **Basic Qualifications:** Experience with requirements verification in...start with the ability to obtain and maintain a TS / SCI with CI Poly **Desired… more
    Lockheed Martin (11/13/25)
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  • Sr Systems Engineer - System Safety…

    Lockheed Martin (Littleton, CO)
    …clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/ Poly **Other Important Information You Should Know** **Expression ... in working for a company that develops national defense systems , come and be a part of our System...TS Clearance * US Citizenship\. **Desired Skills:** * TS \- SCI with Poly * Experience… more
    Lockheed Martin (12/04/25)
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  • Information Systems Security…

    Lockheed Martin (Littleton, CO)
    …clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/ Poly **Other Important Information You Should Know** **Expression ... **Description:** **This position requires TS / SCI clearance with ability to pass...team, program, and government customers to perform as an Information Systems Security Officer \(ISSO\) at the… more
    Lockheed Martin (11/12/25)
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  • Information Systems Security…

    Lockheed Martin (Littleton, CO)
    …clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/ Poly **Other Important Information You Should Know** **Expression ... **Description:** **This position requires TS / SCI clearance with ability to receive...team, program, and government customers to perform as an Information Systems Security Officer \(ISSO\) for Special… more
    Lockheed Martin (11/07/25)
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  • Principal Systems Engineer (MBSE) (Onsite))

    RTX Corporation (Aurora, CO)
    …is required, as only US citizens are eligible for a security clearance​ **Security Clearance:** TS / SCI with CI Poly - Current At Raytheon, the foundation of ... more secure world. Raytheon Technologies is seeking a Principal Systems Engineer (MBSE) to provide enterprise-wide systems ...Military, SETA, and Contractor). + **An active and transferable TS / SCI CI Poly US government… more
    RTX Corporation (12/03/25)
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  • Systems Engineering Manager

    Lockheed Martin (Littleton, CO)
    …clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/ Poly **Other Important Information You Should Know** **Expression ... of corporate responsibility\. Lockheed Martin is seeking a dynamic ** Systems Engineering Asc Manager** to manage a portion of...the System Engineering life cycle * Active or Current TS / SCI with Poly required to… more
    Lockheed Martin (10/31/25)
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  • Electro-Optical Systems Engineer (Level IV)

    Lockheed Martin (Louisville, CO)
    …clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/ Poly **Other Important Information You Should Know** **Expression ... for you\. Lockheed Martin Space is seeking an **Electro\-Optical Systems Engineer** to join our team in **Louisville, CO**...Must have the ability to obtain & maintain a TS / SCI w/ Poly security clearance **Desired… more
    Lockheed Martin (12/06/25)
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  • Electro-Optical Model Based Systems

    Lockheed Martin (Louisville, CO)
    …clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/ Poly **Other Important Information You Should Know** **Expression ... you\. Lockheed Martin Space is seeking an **Electro\-Optical MBSE Systems Engineer** to join our team in **Sunnyvale, CA...* Must be able to obtain and maintain a TS / SCI w/ Poly clearance\. **Desired Skills:**… more
    Lockheed Martin (12/06/25)
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