Refrigeration Systems Engineer

Advantest Test Solutions, Inc. (ATS) is seeking a Refrigeration Systems Engineer to join our team in Lake Forest, CA. ATS is a leading provider of massively parallel electronic test systems, including System Level Test (SLT), burn-in, and semiconductor/module testing. We offer an exciting portfolio of high-performance test systems that support the semiconductor industry worldwide. This is a unique opportunity for an engineer with deep refrigeration expertise to contribute to thermally demanding, cutting-edge semiconductor test equipment.

This individual will be responsible for the design, validation, and integration of refrigeration systems into ATS electronic test platforms — supporting products across semiconductors, photonics, and embedded devices. Responsibilities span from concept through production, including hands-on prototype evaluation, field issue resolution, and customer site support.

• →Define refrigeration system requirements to meet the thermal management needs of electronic test equipment
• →Perform refrigeration cycle analysis and establish performance and sizing requirements for major system components, including compressors, heat exchangers, and expansion devices
• →Design refrigeration systems from concept through production, including component sizing and selection
• →Collaborate with cross-functional design and development teams to integrate refrigeration systems into electronic test equipment
• →Conduct hands-on evaluation of prototype and sub-assembly builds, including thorough performance assessments
• →Perform thermal testing and validation to ensure compliance with design specifications and performance requirements
• →Develop and maintain detailed documentation of designs, analyses, and test results
• →Ensure compliance with applicable industry standards and regulations governing refrigeration systems
• →Partner with procurement, manufacturing, quality, and field service teams to establish component specifications and support vendor/supplier qualification
• →Identify risk areas and opportunities for design optimization
• →Act as a technical point of contact for customers on select refrigeration-related issues
• →Provide hands-on support during product installation and commissioning at customer sites, and serve as a technical resource for field service teams
• →All other duties as assigned

• Bachelor's degree in Mechanical Engineering or related field; Master's degree preferred
• Minimum 5 years of experience in refrigeration system design
• Demonstrated experience with vapor compression cycle analysis and hands-on design of condensing units and/or chillers
• Expertise in liquid- and refrigerant-based thermal systems
• Strong analytical and problem-solving skills
• Proficiency in 3D CAD modeling; SolidWorks experience preferred
• Ability to travel up to 20% domestically and internationally to customer sites
• On-site role based in Lake Forest, CA