Thermal R&D Engineer
Advantest
Job DescriptionPosition OverviewAdvantest is a global leader in semiconductor test and measurement solutions. To support next‑generation test platforms and increasing device power densities, we are expanding our Global Thermal R&D Team to develop advanced cooling technologies.We are seeking a Thermal R&D Engineer with hands‑on experience in two‑phase cooling and refrigeration‑based systems. This role focuses on the architecture, design, prototyping, and validation of closed‑loop phase‑change cooling solutions for high‑performance semiconductor test environments.The ideal candidate combines strong fundamentals in thermodynamics and heat transfer with practical experience designing and experimentally validating evaporators, condensers, compressors, and refrigerant loops. This is a highly technical, hands‑on R&D role with real product impact.Key ResponsibilitiesDesign, develop, and optimize two‑phase cooling systems, including evaporators, condensers, compressors, and closed‑loop refrigerant circuits for semiconductor test applicationsDefine system‑level architecture, component specifications, and performance requirements for refrigeration‑based and phase‑change cooling solutionsBuild and assemble prototype hardware, fluid loops, test rigs, and instrumentation to experimentally evaluate performancePlan and execute experiments to characterize thermal performance, pressure drop, stability, and reliability of two‑phase systemsDevelop and validate analytical, first‑principles, and simulation models for heat transfer and fluid flow in phase‑change systemsEvaluate refrigerants with respect to performance, operating temperature range, environmental impact, safety, and material compatibilityCollaborate closely with mechanical, electrical, manufacturing, and system teams to integrate cooling solutions into complex test platformsDrive design optimization for efficiency, robustness, manufacturability, and costContribute to long‑term technology roadmaps for advanced thermal and two‑phase cooling solutionsJob RequirementsQualifications & Experience RequiredBachelor’s degree in Mechanical Engineering or related field (Master’s degree preferred)5+ years of experience designing and developing two‑phase or refrigeration‑based thermal systemsStrong understanding of thermodynamics, heat transfer, and fluid mechanics, particularly for phase‑change systemsPractical experience with compressor selection, evaporator/condenser design, and system‑level performance optimizationHands‑on experience assembling and testing fluid loops, refrigeration systems, or thermal prototypesProficiency with 3D CAD tools (SolidWorks or equivalent)Strong analytical, problem‑solving, and communication skillsPreferredExperience with pumped refrigerant loops, vapor‑compression systems, or thermosiphonsFamiliarity with thermal/CFD simulation tools (Solidworks, ANSYS, FloEFD, or similar)Experience working in semiconductor, electronics cooling, or high‑power systemsRole DetailsOn‑site position at Advantest’s Lake Forest, CA facilityUp to 10% domestic and international travelWhy Advantest?This role offers the opportunity to work at the forefront of advanced thermal management for semiconductor testing, where cooling performance directly enables next‑generation device capabilities. You’ll collaborate with a global R&D organization, influence future product platforms, and help define new approaches to two‑phase cooling in demanding, real‑world applications.Job DetailsJob Type: Full-timeCategory: Research & Development (Hardware Development)
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