We are seeking a Thermal and Mechanical Design Engineer to develop innovative cooling and mechanical solutions for high-power electronic systems. You will work closely with electrical, packaging, hardware teams and JDM partners to ensure robust thermal management and mechanical integrity in products such as AI server systems, AI chips, and advanced IC packaging.Responsibilities Design and simulate thermal solutions (eg, heat sinks, cold plates, TIMs) for electronics with high heat fluxConduct thermal modeling using tools like ANSYS Icepak, FloTHERM, or COMSOLDevelop mechanical structures for PCB enclosures, chassis, and rack-level systems using CAD tools (eg, SolidWorks, Creo)Define and validate mechanical tolerances, thermal interfaces, and mounting schemesCollaborate with cross-functional teams to ensure DFM/DFA and compliance with environmental, mechanical, and safety standards.Perform thermal and mechanical validation tests (shock, vibration, temperature cycling) and correlate them with simulationDrive material selection for thermal conductivity, CTE matching, and manufacturabilitySupport thermal design for chiplets, interposers, HBM stacks, and other advanced packagingQualificationsBachelor's or Master's degree in Mechanical Engineering, Thermal Engineering, or a related field3+ years of experience in thermal/mechanical design for electronicsProficiency in thermal simulation and mechanical CAD toolsStrong understanding of heat transfer, fluid dynamics, and structural mechanicsExperience with thermal interface materials, cold plates, or liquid cooling solutions is a plusFamiliarity with industry standards (IPC, JEDEC, IEEE, MIL-STD) preferredPreferred QualificationsHands-on experience with thermal measurement techniques (eg, thermocouples, IR cameras)Experience in electronics packaging, rack-level system design, or data center coolingKnowledge of vibration/shock analysis for mission-critical systemsCompensation: The US base salary for this Full time position is $160,000 - $400,000 + equity + benefitsAs part of our dedication to the diversity of our team and our focus on creating an inviting and inclusive work experience, MatX is committed to a policy of Equal Employment Opportunity and will not discriminate against an applicant or employee on the basis of race, color, religion, creed, national origin or ancestry, sex, gender, gender identity, gender expression, sexual orientation, age, physical or mental disability, medical condition, marital/domestic partner status, military and veteran status, genetic information or any other legally recognized protected basis under federal, state or local laws, regulations or ordinances.All candidates must be authorized to work in the United States and work from our offices in Mountain View Tuesdays-Thursdays.This position requires access to information that is subject to U.S. export controls. This offer of employment is contingent upon the applicants capacity to perform job functions in compliance with U.S. export control laws without obtaining a license from U.S. export control authorities.MatX does not accept unsolicited resumes from individual recruiters or third-party recruiting agencies in response to job postings. No fee will be paid to third parties who submit unsolicited candidates directly to our hiring managers or People team and any resumes submitted are deemed to be the property of MatX.