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Los Altos, CA Full Time Posted by: Majestic Labs ai Posted: 23/01/2026 20:32:20
 
 
Overview

We are seeking a Principal Mechanical and Thermal Engineer to lead the hardware definition of our next-generation AI infrastructure. This is a high-impact leadership role where you will serve as the primary technical authority for the physical architecture of advanced server platforms. You will bridge the critical gap between ultra-high-power silicon packaging, liquid-cooled node design, and massive-scale Rack deployments.

Responsibilities
  • Blade & Chassis Design: Lead the end-to-end mechanical definition of server blades, high-density chassis, and rack-level enclosures.
  • Structural Hardware: Architect the integration of sliding rails, blind-mate connectors, precision standoffs, and high-load Extraction Handles.
  • Power & Interconnects: Define mechanical paths for ultra-high-density power delivery (Busbars) and complex cable management.
  • Cold Plate Engineering: Direct the design of Liquid Cooling Cold Plates, optimizing internal micro-channels and manifold fluid distribution.
  • Fluid Management: Validate the selection and integration of Quick Disconnects (QDs) and leak-mitigation systems.
  • Simulation: Drive thermal strategy for 1kW+ nodes using CFD to balance hybrid air/liquid cooling.
  • HVM Mastery: Optimize designs for high-volume manufacturing using Precision Milling, Die Casting, and Complex Sheet Metal fabrication.
  • Environmental Ruggedization: Ensure system integrity against Transportation Shock & Vibration and extreme Thermal/Humidity cycling.
  • Total Lifecycle Design: Implement Design for Cost (DfC) and Easy Assembly (DFA) to ensure seamless serviceability and global deployment.
Required Qualifications
  • Education: B.S. or M.S. in Mechanical Engineering.
  • Experience: 12+ years in high-performance compute (HPC), AI hardware, or datacenter systems.
  • Architectural Pedigree: A proven track record of owning at least one full product lifecycle-from blank-page concept through High-Volume Manufacturing (HVM).
  • Liquid Cooling Expertise: Deep technical knowledge of fluid dynamics, wetted material compatibility, and the mechanical nuances of Drip-Free connector integration.
  • Manufacturing Mastery: Expert-level understanding of metal fabrication (Milling, Casting, Sheet Metal) and how these processes impact thermal performance and structural integrity.
  • Simulation Proficiency: Expert user of CFD and FEA tools for structural and vibration analysis.
  • Influence: Ability to drive technical alignment across silicon, power, and optical engineering teams.
Preferred Qualifications
  • Direct experience with AI/GPU-based architectures and ultra-high-density power delivery
  • Deep familiarity with Open Compute Project (OCP) or ORV3 standards.
  • Experience with blind-mate liquid and power interfaces.
Los Altos, CA, United States of America
Engineering
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23/01/2026 20:32:20
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