[Skip to main content](#main-content)

[OpenNash Jobs](https://jobs.opennash.com/)
[Hiring report](/reports/hiring/) · [All Infineon Technologies jobs](https://jobs.opennash.com/companies/infineon-technologies/) · [Search jobs](/search/)

Infineon Technologies · San Jose, CA

# Thermal Design Engineer - Lead Principal

San Jose, CA, US Full-time Manager or lead Design 

Listed on Infineon Technologies’s official careers site. Posted October 7, 2026. Check that it is still open and apply there.
[Apply on Infineon Technologies’s careers site →](https://jobs.infineon.com/careers/job/563808970962799)

[OpenNash Jobs](https://jobs.opennash.com/) / [Infineon Technologies](https://jobs.opennash.com/companies/infineon-technologies/) / Thermal Design Engineer - Lead Principal

## Job description
- Lead thermal design and development of advanced semiconductor power solutions, including IVR, VRM, and power module platforms Architect thermal management solutions for high power-density products utilizing liquid cooling, cold plates, manifolds, heat sinks, and TIM materials
- Perform detailed thermal simulations using ANSYS Icepak, FloTHERM, FEAtools, and CFD methodologies
- Develop and optimize mechanical designs using SolidWorks for thermal assemblies and packaging solutions.

Conduct steady-state and transient thermal analysis to improve performance, reliability, and manufacturability. Evaluate and select thermal interface materials (TIMs), cooling technologies, and advanced materials for semiconductor applications. Partner cross-functionally with electrical, package, reliability, manufacturing, and systems engineering teams. Drive prototype builds, thermal validation, and correlation between simulation and lab data.

Mentor junior engineers and provide technical leadership across thermal engineering initiatives. Influence product roadmap decisions related to thermal performance, packaging, and system integration. Bachelor's or Master's degree in Mechanical Engineering or relateddiscipline. PhD is a plus. 8-10+ years of thermal/mechanical design experience within the semiconductor, power electronics, or advanced electronics cooling industry.

Expert proficiency in SolidWorks for 3D mechanical design. Strong hands-on experience with FloTHERM, ANSYS Icepak, and FiniteElement Analysis (FEA) tools. Deep knowledge of liquid cooling systems, including cold plates,manifolds, pumps, and coolant flow optimization. Experience designing heat sinks, vapor chambers, TIM interfaces, and package level thermal solutions. Strong understanding of semiconductor packaging constraints,reliability, and manufacturability.

Ability to lead programs independently and communicate effectively with executive and technical teams. We are on a journey to create the best Infineon for everyone. We strive to create the best Infineon for everyone by embracing diversity and inclusion. We welcome applicants for who they are and offer a workplace built on trust, openness, respect and equal opportunity. Our hiring decisions are based on skills and experience.

Even if you don't meet every requirement, we encourage you to apply. Please let your recruiter know if you need any accommodations during the interview process. Learn more about our various contact channels and about Diversity & Inclusion at Infineon. LI-EL1

## At a glance
- Posted by the employer: Oct 7, 2026
- First seen by OpenNash: Oct 13, 2026
- Last checked: Oct 20, 2026
- Listed for: 13 days
- Location: San Jose, CA, US
- Employment type: Full-time[Apply on Infineon Technologies’s careers site →](https://jobs.infineon.com/careers/job/563808970962799)

## More jobs at Infineon Technologies

### [Internship - Analog Mixed-Signal Design](https://jobs.opennash.com/companies/infineon-technologies/jobs/72baf824bb5c01f976de/)

San Jose, CA, US

### [Principal Applications Engineer](https://jobs.opennash.com/companies/infineon-technologies/jobs/03311f85bffffd323e20/)

San Jose, CA, US

### [Duales Studium Design- und Projektmanagement 2027 (m/w/d)](https://jobs.opennash.com/companies/infineon-technologies/jobs/062012d8c6ec861155a8/)

Warstein, NRW, DE

### [Engineer - System Design](https://jobs.opennash.com/companies/infineon-technologies/jobs/f2a1f798095b6214112a/)

Singapore

### [Engineer / Senior Engineer - Design Engineering](https://jobs.opennash.com/companies/infineon-technologies/jobs/51a13842c7b906599bf9/)

Singapore

## Similar jobs at other companies

### [Structural and Thermal Design and Test Engineer](https://jobs.opennash.com/companies/bae-systems/jobs/e8bc0c601f83553e4904/)

BAE Systems · Cedar Rapids, Iowa, United States

### [Thermal Systems Lead Engineer - Sustainable Design](https://jobs.opennash.com/companies/trane-technologies/jobs/f0e05da4d4f3b0d3cc16/)

Trane Technologies · Davidson, North Carolina, United States of America

### [Sr. Principal Mechanical Engineer (Thermal Analysis SME)](https://jobs.opennash.com/companies/bae-systems/jobs/339217993481e4f0f670/)

BAE Systems · Nashua, New Hampshire, United States

### [Sr Staff or Principal Thermal Engineer, Server Packaging (San Diego)](https://jobs.opennash.com/companies/qualcomm/jobs/7752f8777c35890d2c8d/)

Qualcomm · San Diego, California, United States of America

### [Principal, Thermal Design Engineer](https://jobs.opennash.com/companies/celestica/jobs/3832f14d80131cb4f107/)

Celestica · San Jose, CA, US

OpenNash lists jobs from employers’ own careers sites and does not handle applications.
Dates come from the employer where stated; “first seen” and “last checked” are our own observations.

OpenNash Jobs · Official listings with dates and links to the employer. [Weekly hiring report](/reports/hiring/) · [Methodology](/methodology/)