• AeroVironment (Moorpark, CA)
    …is performing as it should. Because of the nature of the development efforts, the Principal Engineer will have a hand in a variety of stages of development ... **Worker Type** Regular **Job Description** **Summary** The ** Principal Systems Engineer ** is considered a...requirements & identify tolerances + Create model based Systems Test strategy based on flight envelope that includes corner… more
    DirectEmployers Association (11/05/25)
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  • Integra LifeSciences (Irvine, CA)
    …pathways to advance patient outcomes and set new standards of care. The Principal Product Development Engineer will lead major system projects of varying ... across Integra with a focus on neurological diseases. The Principal Product Development Engineer will be responsible...will be responsible for the complete development of the mechanical , electrical, software and optical aspects of a project… more
    DirectEmployers Association (10/08/25)
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  • Mission Support and Test Services (Sacramento, CA)
    **Job Description** Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Site (NNSS) for the US National Nuclear Security ... NNSS-STL is seeking outstanding candidates for an RF Systems Engineer position to work at STL located in Santa...Equipment vulnerability assessment & red-teaming + Hands-on operation and test of hardware and firmware + Lead small teams… more
    DirectEmployers Association (09/06/25)
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  • Stratolaunch, LLC (Mojave, CA)
    …security. To help achieve these efforts, Stratolaunch is seeking a Sr-, Staff-, or Principal -level Mechanical Engineer to support the airframe team in the ... within a multi-disciplined group of engineers to design, build, integrate, and test vehicles to meet customer structural requirements. An ideal candidate has… more
    DirectEmployers Association (09/03/25)
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  • Stratolaunch, LLC (Mojave, CA)
    …national security. To help achieve these efforts, Stratolaunch is seeking a Staff- or Principal -level Environmental Test Engineer , to lead the environmental ... and flight of air-launched, hypersonic vehicle programs through all aspects of the test program (ground and air support equipment and flight test ). You… more
    DirectEmployers Association (09/25/25)
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  • Principal Mechanical Engineer

    Roche (Santa Clara, CA)
    …and advancing technologies to significantly enhance DNA sequencing workflows. We are seeking a Principal Mechanical Engineer to lead the mechanical ... solutions that ensure the ultimate performance, reliability, and longevity of our systems. The Principal Mechanical Engineer will play a vital role in… more
    Roche (11/10/25)
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  • Principal Mechanical Engineer

    Curtiss-Wright Corporation (Santa Clarita, CA)
    Principal Mechanical Engineer - Onsite Position As our **_Principal Mechanical Engineer_** you will design and analyze complex VPX based electro- ... mechanical systems for thermal design, structural design, and packaging...and interpret results, conduct analysis and write analysis and test reports. Capability to draw conclusions and reconcile differences… more
    Curtiss-Wright Corporation (10/08/25)
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  • Principal Product Development…

    RTX Corporation (Goleta, CA)
    …meaningful problems that create a safer, more secure world. Raytheon is seeking a Principal Mechanical Engineer to lead new product development within the ... the supporting programs. **What You Will Do** + The Principal Engineer is a key technical contributor...failure modes, metal fabrication and finishing methods, RF isolation mechanical design, and environmental test methods and… more
    RTX Corporation (10/29/25)
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  • Principal Mechanical Design…

    Roche (Santa Clara, CA)
    …where every voice matters. **The Position** Roche Sequencing Solutions is expanding with a Principal Mechanical Design Engineer to lead the mechanical ... subsystems such as fluidic, mechatronic, pneumatic, thermal, optical, and electrical components. The Principal Mechanical Design Engineer will play a vital… more
    Roche (09/26/25)
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  • Sr Principal Mechanical

    Medtronic (Northridge, CA)
    …connected, compassionate world. **A Day in the Life** As a member of the Mechanical Engineering R&D group, the individual selected for this role will lead new ... a plus, background in process design, development and qualifications including Test Method Validation (TMV) as well as hands-on prototyping/testing. This individual… more
    Medtronic (11/19/25)
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