• Stratolaunch, LLC (Mojave, CA)
    …efforts, Stratolaunch is seeking a level II, Sr-, or Staff-level Propulsion or Mechanical Engineer to support design, integration, testing, and maintenance of ... design, mechanical design, structural engineering, component or assembly level mechanical or fluid testing, rocket testing, cryogenic fluid systems,… more
    DirectEmployers Association (09/30/25)
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  • Sr. Mechanical Engineer

    Amazon (Pasadena, CA)
    …and testing). Candidates must have a strong background in both cryogenic mechanical engineering theory and implementation. Working effectively within ... - High density novel packaging solutions for quantum processor units. - Cryogenic mechanical design for novel cryogenic signal conditioning sub-assemblies. -… more
    Amazon (08/08/25)
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  • Assembly, Integration, & Testing Engineer

    Amazon (Pasadena, CA)
    …Candidates must have experience in assembling and testing complex electrical and mechanical systems. The candidate will work with cryogenic systems, microwave ... electronics, and support hardware. Responsibilities include mechanical assembly, maintenance, and servicing cryogenic test setups; maintaining and organizing R&D… more
    Amazon (09/06/25)
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  • Principal Mechanical Engineer

    Leonardo DRS, Inc. (Cypress, CA)
    …for surveillance and targeting applications. We are seeking a highly motivated Principal Mechanical Engineer with a strong background in thermal analysis to join ... and Responsibilities** + Conduct thermal analyses for opto- mechanical and electro- mechanical systems operating in orbital and cryogenic environments +… more
    Leonardo DRS, Inc. (08/21/25)
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  • Sr. Mechanical Engineer (Starship…

    SpaceX (Hawthorne, CA)
    Sr. Mechanical Engineer (Starship Components) Hawthorne, CA Apply SpaceX was founded under the belief that a future where humanity is out exploring the stars is ... this possible, with the ultimate goal of enabling human life on Mars. MECHANICAL ENGINEER (STARSHIP COMPONENTS) The Starship Components team develops the most… more
    SpaceX (10/07/25)
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  • Thermal Lab Mechanical Engineer

    The Boeing Company (El Segundo, CA)
    …technologies. Boeing Technology Innovation (BTI) is looking for a **Thermal Lab Mechanical Engineer (Mid-Level or Senior)** based in **El Segundo, CA** ... wide range of disciplines to maximize uptime of a cryogenic test facility. + Provide innovative approaches and unique...development, integration, and test of a large scale complex mechanical and fluid system test facility + Effectively communicate… more
    The Boeing Company (10/08/25)
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  • Deputy Chief Engineer

    The Boeing Company (El Segundo, CA)
    …subordinate technologies. Boeing Technology Innovation is looking for a **Deputy Chief Engineer ** based in **El Segundo, CA** . As Deputy Chief Engineer ... rotating machinery, heat exchangers, instrumentation and control systems. The Deputy Chief Engineer will demonstrate knowledge and experience across a wide range of… more
    The Boeing Company (10/08/25)
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  • Sr. Propulsion Design Engineer (Raptor…

    SpaceX (Hawthorne, CA)
    Sr. Propulsion Design Engineer (Raptor Engine Systems) Hawthorne, CA Apply SpaceX was founded under the belief that a future where humanity is out exploring the ... with the ultimate goal of enabling human life on Mars. SR. PROPULSION DESIGN ENGINEER (RAPTOR ENGINE SYSTEMS) The Raptor Systems Design team is seeking a senior … more
    SpaceX (09/02/25)
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  • Test Engineer , Propulsion Components…

    SpaceX (Hawthorne, CA)
    Test Engineer , Propulsion Components (Starship) Hawthorne, CA Apply SpaceX was founded under the belief that a future where humanity is out exploring the stars is ... with the ultimate goal of enabling human life on Mars. TEST ENGINEER , PROPULSION COMPONENTS (STARSHIP) The Starship Components team develops the most advanced… more
    SpaceX (10/02/25)
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  • Responsible Engineer , Turbomachinery…

    SpaceX (Hawthorne, CA)
    Responsible Engineer , Turbomachinery (Starship) Hawthorne, CA Apply SpaceX was founded under the belief that a future where humanity is out exploring the stars is ... possible, with the ultimate goal of enabling human life on Mars. RESPONSIBLE ENGINEER , TURBOMACHINERY (STARSHIP) This role as a responsible engineer (RE) focuses… more
    SpaceX (10/11/25)
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