Principal Thermal Engineer

Responsibilities

• Serve as the technical lead for direct-to-chip liquid cooling systems with a focus on collaboration across external manufacturers and internal stakeholders.
• Develop and maintain technical specifications and requirements for direct-to-chip cooling solutions.
• Oversee the qualification, integration, and mass production of liquid cooling systems at external manufacturing sites, ensuring adherence to company quality, safety, and performance standards.
• Drive joint problem-solving efforts on yield, performance, and manufacturing challenges related to liquid cooling technologies.
• Review and validate engineering designs, ensuring alignment with system-level requirements (mechanical, fluid, thermal, and electrical interfaces).
• Review and audit supplier manufacturing processes for compliance with company and industry regulations.
• Support the continuous improvement of cooling designs based on manufacturing feedback and field data.
• Prepare, review, and maintain documentation, including test plans, technical reports, process control documents, and validation results.
• Provide technical training and guidance to manufacturing partners as needed.

Qualifications

• Bachelor’s or Master’s degree in Mechanical Engineering, Chemical Engineering, Materials Science, or a closely related field.
• 5+ years of experience in thermal systems engineering, preferably with direct experience in liquid cooling for high-performance computing or data centers.
• Hands-on experience with manufacturing processes, supplier management, and technology transfer.
• Strong understanding of liquid cooling–specific reliability, safety, and performance challenges.
• Demonstrated experience in supplier development, process audit, and technical troubleshooting.
• Excellent verbal and written communication skills; able to translate complex technical information for varied audiences.
• Able to travel domestically and internationally to manufacturing sites as required.
• Experience with cold plate cooling systems.
• Familiarity with industry standards, guidelines, and environmental compliance for data center cooling (ASHRAE, OCP, RoHS, etc).
• Prior exposure to scaling cooling systems from lab/POC to mass production.
• Exposure and experience with coolant chemistries and technologies.