Thermal Engineer

Responsibilities

• Define end-to-end thermal design across NPU/ASIC package → PCB → card (PCIe FHFL/HHHL, OAM, SXM) → system (server chassis) levels, selecting and designing heatsinks, heat pipes, vapor chambers, cold plates, and TIM

• Evaluate trade-offs across cooling approaches — air, liquid, 2-phase, and immersion — and run CFD simulations (FloTHERM, Icepak) including EM-thermal co-simulation using power maps from HFSS/SIwave/PowerDC

• Validate thermal performance through wind tunnel testing, hands-on temperature measurement (thermocouples, IR cameras, RTDs), and DOE-based simulation-to-measurement correlation

• Support reliability testing including thermal cycling and burn-in

• Partner with electrical, mechanical, and manufacturing teams to integrate thermal solutions into packaged hardware, and negotiate thermal specifications with OEM/ODM and hyperscale customers

• Author thermal design guides, reference designs, and test reports, and ensure compliance with form-factor standards (OCP OAM, PCIe CEM, NVIDIA SXM, etc.)

Minimum Qualifications

• Thermal Modeling & Simulation: Utilize computational fluid dynamics (CFD) to simulate heat transfer and fluid flow.

• System Design: Design active and passive cooling solutions, including heatsinks, fans, liquid cooling coldplate.

• Thermal Testing: Evaluation for NPU card thermal performance with using multi temp recorder and FLIR camera or thermocouples.

• Collaboration: Work closely with electrical, mechanical, and manufacturing teams to integrate thermal solutions into packaged hardware.

Preferred Qualifications

• Experienced GPU or NPU card development or server development for datacenter

• Flotherm or Icepak preferred

• English communication for business level

• Positive and proactive engineer

Job Location

• Dongtan / Seoul

• The primary work location for this position is Dongtan, with the option to work in either Dongtan or Seoul. Candidates who can work in Dongtan are preferred.

Contact

• [email protected]