The Cloud Hardware Development Engineer (Thermal/Mechanical) at Annapurna Labs focuses on the thermal and mechanical architecture for ML/AI accelerator platforms. This role involves designing cooling solutions for high-power-density silicon and ensuring mechanical integrity across the product lifecycle. The team is responsible for delivering innovative cloud solutions that power AWS services at a global scale. Collaboration with various engineering teams is essential to drive the development of cutting-edge technology.

• BS degree in mechanical engineering or equivalent
• 7+ years industry experience in Mechanical and Thermal design in electronics packaging
• Experience in thermal and performance measurements and characterization on SoCs, Servers, or related Systems
• 3+ years of experience in SoC Thermal modelling and IC package transient thermal response
• Experience with chip package, system mechanical & thermal design for air-cooled and liquid-cooled systems
• Experience with tolerance analysis (stack-up/GD&T) and sheet metal or precision-machined component design for electronics packaging
• Experience with production fleet support: telemetry analysis, root cause analysis, and defining mitigation strategies
• Experience leading cross-functional technical projects spanning silicon, firmware, mechanical, and operations teams
• Knowledge of generic mechanical room infrastructure such as chillers, cooler units, and fan controls
• Experience in mentoring, leading, or managing more junior engineers
• Knowledge of SoC thermal/mechanical design methodology, power modeling and thermal analysis techniques
• Tool familiarity: Ansys Icepak, FloTherm, Cadence Celsius, PTC Creo, and Solidworks
• Proficiency in 3D CAD modeling and engineering drawings per ASME Y14.5 (GD&T) standards
• Programming experience: Bash script, Shell script, Linux, Python, and Lua
• Knowledge of various types of technologies used for heatsink solutions, Thermal Interface Materials (TIMs), and liquid cooling technologies
• Knowledge of hardware and software based thermal/power management control algorithms
• Experience with liquid cooling system design: rack manifolds, cold plates, quick-disconnect fittings, CDU integration
• Experience with mechanical design of high-density interconnect systems (cable cartridges, blind-mate connectors, backplane assemblies)
• Experience with high-power-density ML/AI accelerator or HPC thermal design
• Track record of driving cost optimization through vendor strategy, second-sourcing, or design-for-manufacturing improvements
• Familiarity with manufacturing processes: injection molding, sheet metal fabrication, die-casting, and CNC machining
• Experience with shock, vibration, and structural qualification testing per ISTA, ASTM, or equivalent standards

• Own the complete thermal and mechanical design for ML/AI accelerator platforms from rack-level infrastructure down to chip packaging.
• Define thermal and mechanical design requirements and establish design targets.
• Deliver production platforms through the full lifecycle including concept, design, analysis, prototyping, validation, manufacturing ramp, and fleet operations.
• Design and optimize cooling solutions for high-power-density ML/AI accelerators.
• Develop detailed CFD models and structural FEA for thermal analysis and mechanical integrity.
• Design rack manifolds, cold plates, and data center liquid cooling interfaces for at-scale deployments.
• Develop and validate mechanical structures for manufacturability, reliability, and serviceability.
• Perform structural FEA for shock, vibration, and transportation loads.
• Participate in on-call rotations monitoring fleet thermal telemetry for emergent issues.
• Perform root cause analysis of thermal and mechanical failures in production.
• Drive design standardization and engage with ODMs and component suppliers.
• Lead design reviews and mentor junior engineers.

• Employees at Amazon are often offered comprehensive health benefits—including multiple medical plan options (no pre-existing condition exclusions, 100% covered in-network preventive care), dental and vision plans, a 24/7 medical advice line from day one, expert second-opinion services, and broad mental-health support with several free counseling sessions (including pediatric). Financial wellness typically includes a 401(k) with company match (up to 2%), Restricted Stock Units (equity), FSAs, an emergency savings program, product and partner discounts, and even college-savings and home-purchase programs. Overall, the package is designed to support employees and their families’ health, finances, and day-to-day life.