Job Description

Advantest 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 Responsibilities

• Design, develop, and optimize two‑phase cooling systems, including evaporators, condensers, compressors, and closed‑loop refrigerant circuits for semiconductor test applications
• Define system‑level architecture, component specifications, and performance requirements for refrigeration‑based and phase‑change cooling solutions
• Build and assemble prototype hardware, fluid loops, test rigs, and instrumentation to experimentally evaluate performance
• Plan and execute experiments to characterize thermal performance, pressure drop, stability, and reliability of two‑phase systems
• Develop and validate analytical, first‑principles, and simulation models for heat transfer and fluid flow in phase‑change systems
• Evaluate refrigerants with respect to performance, operating temperature range, environmental impact, safety, and material compatibility
• Collaborate closely with mechanical, electrical, manufacturing, and system teams to integrate cooling solutions into complex test platforms
• Drive design optimization for efficiency, robustness, manufacturability, and cost
• Contribute to long‑term technology roadmaps for advanced thermal and two‑phase cooling solutions

Qualifications

Qualifications & Experience Required

• Bachelor’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 systems
• Strong understanding of thermodynamics, heat transfer, and fluid mechanics, particularly for phase‑change systems
• Practical experience with compressor selection, evaporator/condenser design, and system‑level performance optimization
• Hands‑on experience assembling and testing fluid loops, refrigeration systems, or thermal prototypes
• Proficiency with 3D CAD tools (SolidWorks or equivalent)
• Strong analytical, problem‑solving, and communication skills

Preferred

• Experience with pumped refrigerant loops, vapor‑compression systems, or thermosiphons
• Familiarity with thermal/CFD simulation tools (Solidworks, ANSYS, FloEFD, or similar)
• Experience working in semiconductor, electronics cooling, or high‑power systems

Role Details

• On‑site position at Advantest’s Lake Forest, CA facility
• Up to 10% domestic and international travel

Why 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.

About Advantest

Advantest America Inc. is part of Advantest Corporation, the world’s largest provider of automated test equipment (ATE) for the semiconductor industry. The company designs and manufactures cutting-edge testing solutions that help semiconductor manufacturers ensure the quality and performance of their products. Advantest is known for innovation, reliability, and a strong commitment to supporting its customers and employees.

Our Purpose & Values:
Mission: Improve lives through advanced technologies and customer-focused innovation.
Vision: Be the most trusted and valued test solution provider in the semiconductor value chain.

Core Values:
I- Innovation is our Lifeblood
N- Number One is Our Aspiration
T- Trust is our Foundation
E- Empowerment is Our Motivation
G- Global is our Reach
R- Respect is our Heart
I - Inclusion and Diversity is Our Commitment
T- Teamwork is our Approach
Y- Yes is Our Attitude

Why Join Us

At Advantest, innovation starts with people. We’re looking for curious, capable, and collaborative individuals ready to shape the future of semiconductor technology. You’ll join a global team where your ideas are valued, your growth is supported, and your work makes a real impact.

We foster an integrity-centered culture, where honesty, inclusion, and respect are the foundation of everything we do.

Benefits Overview

* Global Bonus Program: Performance-based bonuses paid twice yearly.
* 401(k) Plan: Pre-tax retirement savings with company match.
* Medical, Dental & Vision: Multiple plan options including HMO, PPO, and HSA.
* Income Protection: Life, disability, and accident insurance at no cost.
* Flexible Spending Accounts: Healthcare and dependent care options.
* Employee Assistance Program: Free support for personal and work-related issues.
* Flexible Time Off: Accrual starts at hire, increases with service.
* Paid Holidays: 13 company holidays annually.

Salary Range

Non-Bay Area Target Salary Range $143,550 - $221,850 DOE

EEO Statement

EEO Statement
Advantest is an Equal Opportunity Employer and embraces diversity in our employee population. It is the policy of Advantest to provide equal opportunity to all qualified applicants and employees without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, protected veteran status or special disabled veteran, marital status, pregnancy, genetic information, or any other legally protected status.

The Advantest Way - Diversity, Equity, Inclusion and Belonging
At Advantest, diversity, equity and inclusion are at the core of who we are. We are continuing to build a culture where everyone feels a sense of belonging through our DE&I programs & initiatives. We strive to have a diverse, equitable and inclusive workplace to enable us to attract and retain candidates that feel a sense of purpose and empowerment. Our commitment to DE&I is unwavering and we are steadfast in our mission to continuously foster an environment of respect, trust and transparency. We value diversity and inclusion and believe employees of all backgrounds contribute to our ongoing success. At Advantest, we celebrate and support the needs of our employees regardless of race, color, ethnicity, national origin, religion, age, disability, gender (including gender expression and gender identity), sex and sexual orientation. DE&I at Advantest is more than words to us, they are the Advantest Way.