Sr. Mechanical Engineer, Annapurna Labs, Artificial Intelligence Hardware

Amazon Web Services (AWS)

Seattle (WA)

On-site

USD 159,000 - 215,000

Full time

2 days ago

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Job summary

Annapurna Labs, an AWS organization, is seeking an experienced Cloud Hardware Development Engineer (Thermal/Mechanical) to own end-to-end thermal and mechanical design for ML/AI accelerator platforms. You will drive platform-level packaging, cooling, and reliability across production lifecycles in a fast-paced, ambiguity-prone environment.

Join a cross-functional team collaborating with silicon, firmware, manufacturing, and operations to deliver scalable systems powering AWS ML/AI services

Qualifications

BS degree in mechanical engineering or equivalent.
7+ years in mechanical and thermal design for electronics packaging.
3+ years in SoC thermal modelling and IC package transient thermal response.
Experience with chip package, system mechanical & thermal design for air- and liquid-cooled systems.
Experience with tolerance analysis (stack-up/GD&T) and sheet metal or precision-machined components.
Experience with production fleet support: telemetry analysis and root cause analysis.
Leading cross-functional technical projects spanning silicon, firmware, mechanical, and operations.

Responsibilities

Own the complete thermal and mechanical design for ML/AI accelerator platforms—from rack-level to chip packaging.
Define design requirements and drive cross-functional alignment across hardware, firmware and software.
Deliver production platforms through concept, design, validation, and fleet operations.
Design cooling solutions and develop models and analyses (CFD/FEA) for high-power ML/AI accelerators.
Lead design reviews, mentor engineers, and influence packaging decisions and validation methods.

Skills

Mechanical design

Thermal design

CFD modeling

FEA analysis

GD&T

Chilled water systems

Vendor management

Cross-functional leadership

Education

BS in mechanical engineering

Tools

Ansys Icepak

FloTherm

Cadence Celsius

PTC Creo

Solidworks

ASME Y14.5 (GD&T)

3D CAD

Linux

Python

Job description

Annapurna Labs (our organization within AWS) designs silicon and software that accelerates innovation. Customers choose us to create cloud solutions that solve challenges that were unimaginable a short time ago—even yesterday. Our custom chips, accelerators, and software stacks enable us to take on technical challenges that have never been seen before, and deliver results that help our customers change the world.

As a member of the Annapurna ML/AI Mechanical Thermal Engineering team, you’ll own the end‑to‑end thermal and mechanical architecture for ML/AI accelerator platforms — from initial concept through production deployment and ongoing fleet operations. You’ll design mechanical and cooling solutions for some of the highest power‑density silicon in the industry, balancing performance, reliability, cost, and operational efficiency at massive scale.

This is a technically challenging role requiring you to operate in ambiguity and at a fast pace. You’ll collaborate across silicon design, electrical engineering, firmware, manufacturing, supply chain, and operations teams to deliver platforms that power AWS ML/AI services at global scale.

Key job responsibilities

As a Cloud Hardware Development Engineer (Thermal/Mechanical), You Will

Platform Ownership

Own the complete thermal and mechanical design for ML/AI accelerator platforms — from rack‑level infrastructure down to chip packaging, including mechanical packaging, structural integrity, and interconnect systems.

Define thermal and mechanical design requirements, establish design targets, and drive cross‑functional alignment that enables parallel development across hardware, firmware, and software teams.

Deliver production platforms through the full lifecycle: concept, design, analysis, prototyping, validation, manufacturing ramp, and fleet operations.

Thermal & Mechanical Design

Design and optimize cooling solutions (air and liquid) for high‑power‑density ML/AI accelerators.

Develop detailed CFD models, compact RC models, and structural FEA for SoC/package thermal analysis and mechanical integrity.

Design rack manifolds, cold plates, and data center liquid cooling interfaces for at‑scale liquid‑cooled deployments.

Develop and validate mechanical structures including chassis and enclosures for manufacturability, reliability, and serviceability. Owning tolerance stack‑up analysis, GD&T, and DFM for high‑volume manufacturing methods (stamping, bending, extrusion, die‑casting).

Own mechanical design of integrating high‑speed interconnect subsystems including cable cartridges, backplane connectors, and mating interfaces — defining alignment, gatherability, insertion force, and serviceability requirements.

Perform structural FEA for shock, vibration, and transportation loads to ensure mechanical integrity across the product lifecycle.

Fleet Operations & Reliability

Participate in on‑call rotations monitoring fleet thermal telemetry for emergent issues.

Perform root cause analysis of thermal and mechanical failures in production, implementing firmware updates, hardware modifications, or operational procedure changes.

Cross‑Functional Leadership

Drive design standardization.

Engage with ODMs and component suppliers to drive design optimization, cost reduction, and supply chain resilience.

Lead design reviews, mentor junior engineers, and contribute to the technical direction of the broader organization.

Influence chip packaging decisions and establish validation methodologies.

About The Team

In 2015, Annapurna Labs was acquired by Amazon Web Services (AWS). Since then, we have developed products that power every layer of the AWS cloud, including AWS Nitro, Graviton processors, and custom ML/AI accelerators — Trainium for training and Inferentia for inference — that enable customers to build and run generative AI applications at scale.

The ML/AI MTE team is part of the Annapurna ML/AI hardware development organization. We design and deliver the thermal and mechanical systems for every generation of custom ML/AI accelerator hardware — from chip package through rack‑level infrastructure. Our platforms operate at massive scale across AWS data centers globally, with current programs including next‑generation Trainium and Inferentia systems featuring liquid cooling at scale.

Basic Qualifications

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

Preferred Qualifications

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. Familiarity with working in a Linux environment
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 — including trade‑offs between methods
Experience with shock, vibration, and structural qualification testing per ISTA, ASTM, or equivalent standards

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.

Los Angeles County applicants: Job duties for this position include: work safely and cooperatively with other employees, supervisors, and staff; adhere to standards of excellence despite stressful conditions; communicate effectively and respectfully with employees, supervisors, and staff to ensure exceptional customer service; and follow all federal, state, and local laws and Company policies. Criminal history may have a direct, adverse, and negative relationship with some of the material job duties of this position. These include the duties and responsibilities listed above, as well as the abilities to adhere to company policies, exercise sound judgment, effectively manage stress and work safely and respectfully with others, exhibit trustworthiness and professionalism, and safeguard business operations and the Company’s reputation. Pursuant to the Los Angeles County Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please visit https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner.

The base salary range for this position is listed below. Your Amazon package will include sign‑on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience, qualifications, and location. Amazon also offers comprehensive benefits including health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance and option for Supplemental life plans, EAP, Mental Health Support, Medical Advice Line, Flexible Spending Accounts, Adoption and Surrogacy Reimbursement coverage), 401(k) matching, paid time off, and parental leave. Learn more about our benefits at https://amazon.jobs/en/benefits.

USA, CA, Cupertino - 183,000.00 - 247,600.00 USD annually

USA, TX, Austin - 159,200.00 - 215,300.00 USD annually

USA, WA, Seattle - 159,200.00 - 215,300.00 USD annually

Company - Annapurna Labs (U.S.) Inc.

Job ID: A10492191

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