Principal Thermal Design Engineer
GW85
Posted: 10/07/2025
- $230,000-$260,000
- San Francisco, CA
- Permanent
About the job
Acceler8Talent is proud to partner with a well-funded, VC-backed AI/networking hardware startup in the SF Bay area that’s redefining infrastructure for the world’s largest hyperscalers. Operating under a Joint Development Model (JDM), this company co-develops highly customized networking hardware, software, and optics solutions tailored to the evolving needs of large-scale AI workloads.
With over $110M in funding and rapid expansion underway, they're now looking to hire a Senior Thermal Engineer to help shape the next generation of high-performance systems.
What You’ll Do:
- Design and develop thermal solutions including heatsinks, cold plates, and liquid cooling systems
- Perform thermal modeling and simulations using industry-standard tools
- Lead thermal testing and validation to ensure performance and reliability
- Collaborate with hardware and system teams to integrate thermal designs
- Work with suppliers to deliver high-quality thermal components
- Troubleshoot thermal issues and maintain system reliability
- Stay current on industry trends and emerging cooling technologies
What You Bring:
- B.S. in Mechanical Engineering (M.S. preferred), with focus on heat transfer
- 10+ years in thermal design; 5+ years with datacenter network systems preferred
- Proficient in thermal simulation tools (Flotherm, Flotherm-XT, IcePak)
- Strong understanding of air cooling techniques: vapor chambers, heat pipes, heat sinks, fans, TIMs, and rack-level constraints
- Experience with liquid cooling (preferred, not required)
- Deep knowledge of heat transfer and real-world thermal system design

Drew Cummings
Semiconductor & Chip Design Recruiter