• 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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  • Mechanical Engineer - Thermal…

    Lockheed Martin (Littleton, CO)
    …finite element numerical solution tools \(e\.g\., Thermal Desktop, SINDA, NX Thermal\) * Active Top Secret or SCI Security Clearance **Desired Skills:** * ... keep the light of liberty shining\! As a Thermal Engineer on GS, you will: * Perform detailed thermal...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/Poly **Other Important Information more
    Lockheed Martin (01/07/26)
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  • Mechanical Engineer - Loads…

    Lockheed Martin (Littleton, CO)
    …of dynamic environments \(e\.g\., acoustics, random vibration, shock, modal, jitter\) * Active Top Secret or SCI Security Clearance **Desired Skills:** * ... light of liberty shining\! As a Loads and Dynamics Engineer on GS, you will: * Perform detailed dynamics...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/Poly **Other Important Information more
    Lockheed Martin (01/07/26)
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  • Mechanical Ground Support Equipment…

    Lockheed Martin (Littleton, CO)
    …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/Poly **Other Important Information You Should Know** ... you\. Come work with multidisciplinary engineers focused on delivering world class Mechanical Ground Support Equipment \(MGSE\)\. You will be responsible for the… more
    Lockheed Martin (12/07/25)
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  • Electro-Optical Laser 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 Laser Systems Engineer ** to join our team in **Louisville, CO** \!...or Q clearance; must be able to obtain a TS / SCI w/Poly clearance; US citizenship required **Desired… more
    Lockheed Martin (12/17/25)
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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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  • 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 (12/25/25)
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  • Model Based Systems Engineer

    Lockheed Martin (Littleton, CO)
    …Experience using Cameo or equivalent SysML for architecture design * Active Top Secret with ability to obtain TS / SCI **Desired Skills:** * Experience ... * 1\+ years professional experience\. * US citizenship required, Top Secret clearance required prior to start\....must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You… more
    Lockheed Martin (12/04/25)
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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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  • Space Vehicle Responsible Systems Engineer

    Lockheed Martin (Littleton, CO)
    …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You Should Know** **Expression of ... of small teams or projects * Active or Current Top Secret Security Clearance \- U\.S\. citizenship...a fast\-paced, dynamic team environment * Active or Current TS / SCI **Security Clearance Statement:** This position requires… more
    Lockheed Martin (12/11/25)
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  • Systems Engineer

    Lockheed Martin (Littleton, CO)
    …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You Should Know** **Expression of ... interested in joining LM and working as a Systems Engineer , please apply to this requisition\. - - -...mission partners and USG laboratories\.\) * US citizenship required, Top Secret clearance required prior to start\.… more
    Lockheed Martin (11/02/25)
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  • Mechanical Engineering Manager

    Lockheed Martin (Littleton, CO)
    …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** Top Secret **Other Important Information You Should Know** **Expression ... and additive manufacturing\. \- The ability and willingness to obtain a TS / SCI with Poly clearance\. **Security Clearance Statement:** This position requires… more
    Lockheed Martin (12/19/25)
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  • Engineer VI

    General Atomics (Englewood, CO)
    …aided design software. + Familiarity with agile design processes. + A current Top - Secret / SCI DoD Clearance is required. **US Citizenship Required?:** ... expansion of existing business opportunities. + Maintains the strict confidentiality of sensitive information . We recognize and appreciate the value and… more
    General Atomics (12/11/25)
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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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  • Thermal Subsystems Product Development Lead

    Lockheed Martin (Highlands Ranch, CO)
    …technical and programmatic issues to peers, senior management and customers \- Current US TOP SECRET or TS / SCI clearance **Security Clearance ... \- Bachelor's in a technical area, such as physics, mechanical or aerospace engineering \- Thermal, structural or similar...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You… more
    Lockheed Martin (11/15/25)
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  • System Integration and Test Engineer

    Lockheed Martin (Littleton, CO)
    …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/Poly **Other Important Information You Should Know** ... operations environment * Must be able to obtain a TS / SCI clearance w/ Polygraph\. **Desired Skills:** *...mechanical and electrical test equipment such as bench top power supplies, oscilloscopes, digital multi\-meters, signal generators *… more
    Lockheed Martin (12/17/25)
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  • Hardware Engineer , Level 2 - Clearance…

    Lockheed Martin (Aurora, CO)
    …\- Active Secret security clearance \(the ability to obtain a TS / SCI clearance\) **Desired Skills:** \- Background in technology, engineering, software, ... Systems Experience \- Experience with large complex systems \- Active TS / SCI security clearance **Security Clearance Statement:** This position requires… more
    Lockheed Martin (12/30/25)
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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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  • 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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  • 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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