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Majestic Labs ai · 14 hours ago

Mechanical and Thermal Engineer – SoC to Rack Integration

Los Altos, CA

Full-time

Onsite

Lead/Staff

12+ years exp

Majestic Labs ai is seeking a Principal Mechanical and Thermal Engineer to lead the hardware definition of their next-generation AI infrastructure. This high-impact leadership role involves serving as the primary technical authority for the physical architecture of advanced server platforms, bridging the gap between ultra-high-power silicon packaging and massive-scale Rack deployments.

Artificial Intelligence (AI)Software

Responsibilities

Lead the end-to-end mechanical definition of server blades, high-density chassis, and rack-level enclosures

Architect the integration of sliding rails, blind-mate connectors, precision standoffs, and high-load Extraction Handles

Define mechanical paths for ultra-high-density power delivery (Busbars) and complex cable management

Direct the design of Liquid Cooling Cold Plates, optimizing internal micro-channels and manifold fluid distribution

Validate the selection and integration of Quick Disconnects (QDs) and leak-mitigation systems

Drive thermal strategy for 1kW+ nodes using CFD to balance hybrid air/liquid cooling

Optimize designs for high-volume manufacturing using Precision Milling, Die Casting, and Complex Sheet Metal fabrication

Ensure system integrity against Transportation Shock & Vibration and extreme Thermal/Humidity cycling

Implement Design for Cost (DfC) and Easy Assembly (DFA) to ensure seamless serviceability and global deployment

Qualification

Mechanical EngineeringHigh-Performance ComputeLiquid Cooling ExpertiseMetal FabricationCFDFEA ToolsProduct Lifecycle ManagementFluid DynamicsTechnical AlignmentAI/GPU ArchitecturesOpen Compute Project

Required

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