• 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 ... ideal candidate has significant prototype development experience, with focus in thermal -structural- mechanical design and build, leading to first flights.… more
    DirectEmployers Association (09/03/25)
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  • Henkel (Irvine, CA)
    Principal Application Engineer **_About_** **_this_** **_Position_** At Henkel, you'll be part of an organization that's shaping the future through innovation, ... a good fit** + Minimum of a bachelor's degree in Materials Science/Engineering, Mechanical Engineering, Chemical Engineering, or a related field, with 10+ years of… more
    DirectEmployers Association (10/10/25)
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  • Stratolaunch, LLC (Mojave, CA)
    …security. To help achieve these efforts, Stratolaunch is seeking a Staff- or Principal -level Environmental Test Engineer , to lead the environmental test team. ... and future environmental test equipment, such as vibration tables and thermal chambers + Support operation of existing environmental test instrumentation systems… 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 using engineering expertise. You will conduct feasibility studies and testing on new and… more
    Curtiss-Wright Corporation (10/08/25)
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  • Principal Mechanical Engineer

    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...a minimum of three years of creating and documenting mechanical designs in Pro/ Engineer /CREO or similar modeling… more
    RTX Corporation (10/29/25)
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  • Principal Mechanical Engineer

    Therma LLC (San Jose, CA)
    …greatest opportunity to succeed. **Location:** San Jose, CA (Onsite) Therma is seeking a Principal Mechanical Engineer with 10+ years of relevant experience ... 50 years, Therma (https://www.therma.com/) has continued to redefine the mechanical construction landscapes in California. Renowned for outstanding client service… more
    Therma LLC (11/01/25)
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  • Principal Mechanical Engineer

    Leonardo DRS, Inc. (Cypress, CA)
    …targeting applications. We are seeking a highly motivated Principal Mechanical Engineer with a strong background in thermal analysis to join the company ... or Top Secret (TS) clearance **Job Duties and Responsibilities** + Conduct thermal analyses for opto- mechanical and electro- mechanical systems operating… more
    Leonardo DRS, Inc. (08/21/25)
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  • Principal Mechanical Design…

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

    Cadence Design Systems, Inc. (San Jose, CA)
    …system, generation after generation, used in labs and datacenters. Looking for a hands-on Principal Thermal Mechanical Engineer who wants to expand ... in a talented organization. This position requires to do thermal analysis, design, and testing; mechanical component...to do thermal analysis, design, and testing; mechanical component and platform enclosure design, thermal more
    Cadence Design Systems, Inc. (09/26/25)
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  • Engineering Airframe Lead

    Stratolaunch, LLC (Mojave, CA)
    …help achieve these efforts, Stratolaunch (https://www.stratolaunch.com/) is seeking a **Staff or Principal -level Mechanical Engineer ** to lead the airframe ... ideal candidate has significant prototype development experience, with focus in thermal -structural- mechanical design, leading to first flights** . **ESSENTIAL… more
    Stratolaunch, LLC (11/07/25)
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  • Principal / Sr Principal

    Northrop Grumman (San Diego, CA)
    …of history, they're making history. **Northrop Grumman Aeronautic Systems** is seeking a ** Principal Engineer Aeronautical OR Senior Principal Engineer ... sustainment, proposal, and design & development projects. _Position may be filled as either a Principal Engineer (level 3) OR Senior Principal Engineer more
    Northrop Grumman (10/02/25)
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  • Principal and Sr. Principal

    Northrop Grumman (El Segundo, CA)
    …previous aircraft systems and Low Observable (LO) experience. **Basic Qualifications** + ** Principal Survivability Engineer (Level 3) -** Bachelor's Degree in a ... years of engineering experience, or 3 years with a Master's degree. + **Senior Principal Survivability Engineer (Level 4) -** Bachelor's Degree in a Science,… more
    Northrop Grumman (10/08/25)
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  • Principal Platform System Engineer

    Microsoft Corporation (Mountain View, CA)
    …Azure Cloud Hardware and Infrastructure Engineering (CHIE) team is seeking a highly motivated Principal hardware systems engineer to work in a team of other ... + Participate in architectural discussions, design and evaluate system behavior, power, thermal and cooling solutions required to meet the demands of AI/ML workloads… more
    Microsoft Corporation (10/25/25)
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  • Principal Engineer

    Curtiss-Wright Corporation (Brea, CA)
    ** Principal Engineer **SIGN ON BONUS **_Join...have the opportunity to work with a team of mechanical engineers in the areas of design, analysis, product ... 401k retirement, tuition reimbursement, and vacations/holidays. **The Opportunity |** **Principle Engineer ** **Location: Brea, CA** Step into a challenging role and… more
    Curtiss-Wright Corporation (10/18/25)
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  • Principal / Sr. Principal

    Northrop Grumman (Los Angeles, CA)
    …history. Northrop Grumman Defense Systems in Northridge, CA. is currently seeking a ** Principal /Sr. Principal Aeronautical Engineer .** We are excited for you ... made in the missile defense industry. **Job Responsibilities:** + Design of mechanical parts and assemblies, including 3D CAD modeling; 2D drawing drafting, review,… more
    Northrop Grumman (10/25/25)
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  • Principal Electrical Engineer

    Microsoft Corporation (Mountain View, CA)
    …will manage and optimize the Cloud infrastructure. We are looking for a ** Principal Electrical Engineer ** to join the team. **Responsibilities** + Understand ... specifications. + Drive internal design collaboration among all functional teams ( thermal , mechanical , firmware, OS), guide external partners (ODM/OEM/Suppliers)… more
    Microsoft Corporation (10/22/25)
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  • Senior Principal MMIC Design…

    Teledyne (Mountain View, CA)
    …teams. + Collaborate with cross-functional teams (program management, mechanical engineering, manufacturing, sales, quality, and leadership) throughout the ... load-pull). + Impedance matching techniques for high-power, high-PAE amplifiers. + Thermal analysis and thermal management strategies. + Advanced stability… more
    Teledyne (10/21/25)
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  • R&D Engineer Mechanical

    Broadcom (San Jose, CA)
    …Sign-In before you apply.** **Job Description:** As a Principal Hardware Engineer , you will design, develop, and deliver Mechanical assemblies, including ... work collaboratively with an interdisciplinary team of Hardware, ASIC, Signal, Mechanical , Thermal , Diagnostic, Packaging, and Manufacturing engineers. In… more
    Broadcom (10/02/25)
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  • Principal Optical System Architect

    TE Connectivity (CA)
    …ML, and hyperscale workloads. + Architect CPO/NPO systems across optical, electrical, thermal , and mechanical domains. + Conduct end-to-end simulations and ... Principal Optical System Architect At TE, you will...faster, more connected world. As the R&D Product Development Engineer - Optical System Architect (SA), you will drive… more
    TE Connectivity (10/07/25)
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