Unknown Company

Principal Thermal Engineer – AI System

fremont, ca • Posted 1 weeks ago
Hybrid Full Time Engineering

  • Own system-level thermal design from early concept through production, optimizing airflow, heatsinks, cold plates, heat exchangers, and liquid cooling hardware for very high-power GPUs, CPUs, VRs, and memory.
  • Design direct-to-chip liquid cooling solutions (cold plates, manifolds, tubing, quick-disconnects), support hybrid platforms, and own airflow design including fan selection, ducting, zoning, and impedance reduction.
  • Perform thermal and CFD modeling to guide placement and layout, instrument systems for validation, execute characterization and margin testing under real AI workloads, and correlate simulation with lab data.
  • Lead thermal bring-up across EVT/DVT/PVT, debug hotspots, instability, and flow anomalies, and drive root-cause analysis with permanent fixes through factory ramp and field deployment.
  • Work closely with mechanical, hardware, power, firmware, SI, and manufacturing teams to ensure thermal considerations are embedded into board layouts, mechanical stackups, and rack packaging; set thermal methodology and mentor engineers.

Requirements

  • Bachelor's or Master's in Mechanical Engineering, Thermal Engineering, or a related discipline.
  • 10+ years of hands-on thermal design for servers, GPU platforms, HPC systems, or high-power electronics, with proven delivery of air-cooled and/or liquid-cooled systems into production and direct involvement in bring-up, validation, and manufacturing ramp.
  • Hyperscale deployment experience strongly preferred.
  • Strong hands-on knowledge of airflow and thermal design for high-power servers, direct-to-chip liquid cooling systems, cold plates/pumps/manifolds/heat exchangers, and CFD/thermal modeling tools; deep understanding of thermal-power-reliability relationships in AI/GPU systems.
  • Strong individual contributor able to own problems end-to-end, comfortable debugging physical systems in the lab, and a clear communicator who translates thermal data into actionable design changes.

Core Competencies

Demonstrates expertise in system-level thermal design, including airflow optimization and liquid cooling solutions for high-power electronics. Proficient in thermal modeling and validation, with a strong focus on collaboration across engineering teams to ensure effective thermal methodologies.

Highest-signal resume keywords

  • Thermal Design Engineering
  • CFD Modeling
  • Liquid Cooling Systems
  • Airflow Optimization
  • Thermal Methodology Development

ATS Optimization Keywords

Hard Skills

  • Thermal Design
  • CFD Modeling Tools
  • Liquid Cooling Solutions
  • Air-Cooled Systems
  • High-Power Electronics
  • Thermal Validation
  • Debugging Physical Systems
  • Thermal-Power-Reliability Relationships
  • Characterization Testing
  • Root-Cause Analysis

Soft Skills

  • Clear Communication
  • Problem Ownership
  • Mentoring Engineers

Certifications & Qualifications

  • Bachelor's in Mechanical Engineering
  • Master's in Thermal Engineering

Industry Keywords

  • High-Power GPUs
  • HPC Systems
  • Hyperscale Deployment
  • Direct-to-Chip Cooling
  • Manufacturing Ramp

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