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Mechanical and Thermal Engineer – SoC to Rack Integration

Job in Los Altos, Santa Clara County, California, 94024, USA
Listing for: Majestic Labs ai
Full Time position
Listed on 2026-02-06
Job specializations:
  • Engineering
    Systems Engineer, Mechanical Engineer, Electrical Engineering
Job Description & How to Apply Below
Position: Mechanical and Thermal Engineer –  SoC to Rack Integration

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.
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