Staff Thermal Engineer

Weights & Biases Weights & Biases · Data AI · Bellevue, WA +4 · Technology

CoreWeave is seeking a Staff Thermal Engineer to own the architecture, design, and evolution of thermals for high-density, GPU-accelerated data centers. This role involves designing, validating, and optimizing thermal solutions, collaborating with engineers developing next-generation AI/ML hardware, and advising on data center infrastructure. The engineer will review and evaluate designs, run simulations, debug issues, and manage deployments from concept through mass production, ensuring high standards for efficiency, safety, reliability, and scalability. The role also includes mentoring junior engineers.

What you'd actually do

  1. Own the architecture, design, and evolution of thermals for high-density, GPU-accelerated data centers.
  2. Design, validate, and optimize rack-level and server-level thermal solutions.
  3. Partner closely with data center teams to define end-to-end thermal architecture—from building infrastructure through the rack.
  4. Collaborate with world-class engineers developing next-generation AI/ML hardware platforms.
  5. Advise on data center secondary loop layout, commissioning, and operation

Skills

Required

  • Thermal management
  • Heatsinks
  • Thermal interface materials
  • Liquid cooling
  • Heat exchangers
  • Fans
  • Mechanical Engineering
  • Aerospace Engineering

Nice to have

  • Hyperscale data centers
  • Liquid cooled data center architectures
  • Cold plates
  • Wetted material compatibility
  • CDUs
  • Cross-functional design efforts
  • Stakeholder management

What the JD emphasized

  • 10+ years of thermal management experience
  • Bachelor’s Degree in Mechanical Engineering, Aerospace Engineering, or a related technical field
  • Experience in heatsinks, thermal interface materials, liquid cooling, heat exchangers and fans
  • Experience in liquid cooled data center architectures, including cold plates, wetted material compatibility, and CDUs
  • Strong thermal design expertise