• Mechanical Engineer ( TS

    Fluor (Aurora, CO)
    …Description** Must have an active (or ability to obtain/maintain) a TS / SCI with polygraph clearance Provides facilities mechanical engineering analysis and ... decommissions and modifications. Be responsible for regular analysis of mechanical systems to include cooling balancing and air quality...have an Active (or ability to obtain & maintain) TS / SCI with Poly Clearance Required * Must… more
    Fluor (10/16/25)
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  • Electro-Optical Controls Systems Engineer

    Lockheed Martin (Louisville, CO)
    …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/Poly **Other Important Information You Should Know** ... Lockheed Martin Space is seeking an **Electro\-Optical Controls Systems Engineer ** to join our team in **Louisville, CO** \!...TS clearance; must be able to obtain a TS / SCI w/Poly clearance; US citizenship required **Desired… more
    Lockheed Martin (12/11/25)
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  • Construction Engineer /Senior Project…

    The Boeing Company (Aurora, CO)
    …activities **Basic Qualifications (Required Skills/Experience):** + Ability to obtain a Sensitive Compartmented Information classification pre-start + ... management, construction engineering **Preferred Qualifications (Desired Skills/Experience):** + Active Top Secret / SCI with Counterintelligence or… more
    The Boeing Company (12/07/25)
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  • Data Center Facility O&M Lead Engineer

    The Boeing Company (Aurora, CO)
    …position.** **Basic Qualifications (Required Skills/Experience):** + Ability to obtain a Sensitive Compartmented Information classification pre-start + ... is looking for a **Data Center Facility O&M Lead Engineer ** to join our team in **Aurora, CO** supporting...eligibility. **Security Clearance** This position requires an active US Top Secret Security Clearance (US Citizenship Required).… more
    The Boeing Company (12/07/25)
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  • Space System Demo Chief Engineer (CE)

    Lockheed Martin (Louisville, CO)
    …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You Should Know** **Expression of ... and ConOps * Ability to obtain and maintain a Top Secret security clearance **Desired Skills:** *...with team members, leadership, subordinates, and customers * Active TS / SCI clearance **Security Clearance Statement:** This position… more
    Lockheed Martin (12/13/25)
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  • Facility Operations Center Engineer , ADC…

    Amazon (Denver, CO)
    …requires that the candidate selected must currently possess and maintain an active TS / SCI security clearance with polygraph. The position further requires that, ... start, the selected candidate obtain and maintain an active TS / SCI security clearance with polygraph or commensurate...platform on a 24x7x365 basis. We support Data Center Engineer Operations teams who are responsible for the operation… more
    Amazon (10/23/25)
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  • Electro-Optical Model Based Systems…

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

    RTX Corporation (Aurora, CO)
    …required, as only US citizens are eligible for a security clearance​ **Security Clearance:** TS / SCI - Current At **Raytheon** , the foundation of everything we ... exciting opportunity for a highly motivated **Principal System Safety Engineer ** to join us on the Air and Space...or equivalent Safety Engineering. + Active US government issued TS / SCI security clearance is required. US citizenship… more
    RTX Corporation (10/31/25)
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  • Staff Engineer Electromechanical

    Northrop Grumman (Aurora, CO)
    …Principal Electromechanical Engineer :** + Bachelor of Science (BS) degree in Mechanical /Aerospace Engineering or closely related STEM field with a minimum of 12 ... you to join our team as a **Staff Electromechanical Engineer ** based out of Aurora, CO. As a Staff...STEM. 9 years with a PhD + **CLEARANCE:** Active TS / SCI required at the time of application… more
    Northrop Grumman (12/17/25)
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  • Principal/Sr. Principal RF Microwave Design…

    Northrop Grumman (Aurora, CO)
    …in Electrical Engineering or Physics with 4 years of relevant experience + Active TS / SCI Clearance at the time of application. + Aerospace industry experience, ... RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE TYPE: SCI TRAVEL: Yes, 10% of the Time **Description**...has an opening for a **_Principal RF Microwave Design Engineer / Sr. Principal RF Microwave Design Engineer_** to… more
    Northrop Grumman (11/20/25)
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  • Project Engineer

    Amazon (Broomfield, CO)
    …the candidate selected be a US Citizen and obtain and maintain an active TS / SCI security clearance. Key job responsibilities The Data Center Project Engineer ... own them to completion. As a Data Center Project Engineer , you will be part of a creative, diverse...that build some of the most interesting electrical and mechanical systems in the world. You will be on… more
    Amazon (10/01/25)
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  • Principal Electromechanical Engineer

    Northrop Grumman (Aurora, CO)
    …of relevant experience with a completed PhD-STEM + **Must have an Active/Final TS / SCI DoD security clearance at the time of application, with ... RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE TYPE: SCI TRAVEL: Yes, 10% of the Time **Description** At Northrop Grumman, our employees have… more
    Northrop Grumman (09/20/25)
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  • Senior Specialist, Info Security Systems…

    L3Harris (Broomfield, CO)
    …of a degree, minimum of 10 years of prior related experience. + Must have active Secret security clearance, TS / SCI preferred. + DoD 8140.03 IAT Level 3 ... domains in the interest of national security. Job Title: Senior Specialist, Information Security Systems Engineer Job Code: 31061 Job Location: Boulder/North… more
    L3Harris (11/12/25)
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