• Metrolink (CA)
    …Authority, the operator of the METROLINK Commuter Rail System, is seeking a Principal Engineer, Design and Standards, who will support the design and ensure ... warehouse environments, with possible exposure to hostile or irate individuals, moving mechanical parts, and loud noises (85+ decibels, such as heavy trucks,… more
    job goal (12/14/25)
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  • Senior Principal Mechanical

    Genentech (South San Francisco, CA)
    **The Position** As a Senior Principal Mechanical Engineer at Genentech, you'll have the unique opportunity to lead the charge in designing and upgrading ... direction of the Director of Design Engineering, the Design Engineering Senior Principal Mechanical Engineer provides technical leadership and accountability for… more
    Genentech (10/14/25)
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  • Senior Principal Mechanical Engineer…

    J&J Family of Companies (Irvine, CA)
    …Our J&J MedTech Electrophysiology Engineering team is currently recruiting for a **Sr. Principal Mechanical Engineer** . The position is located in Irvine, ... https://www.jnj.com **Job Function:** Supply Chain Engineering **Job Sub** **Function:** Mechanical Engineering **Job Category:** Scientific/Technology **All Job Posting Locations:**… more
    J&J Family of Companies (11/21/25)
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  • Principal Mechanical Engineer…

    Genentech (South San Francisco, CA)
    …Vision Plan (CVP) for the South San Francisco campus. This Senior Principal Mechanical Engineer position provides single-point accountability for the successful ... and Electrical Distribution Hub as part of the CVP. The Principal Mechanical Engineer works within a large, cross-functional project organization and serves… more
    Genentech (12/11/25)
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  • Principal Mechanical Engineer II,…

    Roche (Santa Clara, CA)
    …advancing technologies to significantly enhance DNA sequencing workflows. We are seeking a Principal Mechanical Engineer to lead the mechanical design, ... the ultimate performance, reliability, and longevity of our systems.** **The Principal Mechanical Engineer will play a vital role in driving innovation for… more
    Roche (11/21/25)
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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...for direct support to personnel in the preparation of mechanical models, drawings, thermal, and structural reports. You will… more
    Curtiss-Wright Corporation (10/08/25)
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  • Principal Mechanical Engineer - JJMT…

    J&J Family of Companies (Irvine, CA)
    …Our J&J MedTech Electrophysiology Engineering team is currently recruiting for a ** Principal Mechanical Engineer** . The position is located in Irvine, ... https://www.jnj.com **Job Function:** Supply Chain Engineering **Job Sub** **Function:** Mechanical Engineering **Job Category:** Scientific/Technology **All Job Posting Locations:**… more
    J&J Family of Companies (11/21/25)
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  • Principal Mechanical Engineer…

    Therma LLC (San Jose, CA)
    …opportunity to succeed. **Location:** San Jose, CA (Onsite) Therma is seeking a Principal Mechanical Engineer with 10+ years of relevant experience to lead ... 50 years, Therma (https://www.therma.com/) has continued to redefine the mechanical construction landscapes in California. Renowned for outstanding client...the mechanical design of high-performance, energy-efficient building systems. This is… more
    Therma LLC (12/02/25)
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  • Principal Mechanical Design Engineer

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

    Leonardo DRS, Inc. (Cypress, CA)
    …systems for surveillance and targeting applications. We are seeking a highly motivated Principal Mechanical Engineer with a strong background in thermal analysis ... technologies. **Basic Qualifications and Required Skills** + Bachelor's degree in Mechanical or Aerospace Engineering with 10+ years of relevant experience (8+… more
    Leonardo DRS, Inc. (11/20/25)
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