Lead Materials Engineer, Liquid-Cooled Datacenters

Amazon Web Services (AWS); Seattle (WA); On-site; USD 159,000 - 215,000; Full time

Benefits offered by this job

Health insurance

RSUs

401(k) matching

Sign-on bonus

Job summary

Amazon Web Services (AWS) Hardware Engineering seeks an experienced Materials Engineer to advance next‑gen liquid‑cooled datacenter platforms. You will evaluate coolant formulations, own wetted materials specs, and guide material choices across metals, polymers, and elastomers.

You will perform thermodynamic calculations, assess chemical stability, mentor mechanical engineers, and drive sustainability initiatives while collaborating with supply chain and manufacturing teams to ensure end‑to‑end

Qualifications

• 5+ years of experience in materials science, materials engineering, or chemical engineering focused on liquid cooling systems, wetted materials, or coolant chemistry
• Bachelor's degree or higher in Materials Science, Materials Engineering, Chemical Engineering, Mechanical Engineering with a materials concentration, or a closely related field
• Demonstrated experience with coolant formulation evaluation, wetted materials compatibility testing, or thermal fluid system materials selection
• Working knowledge of thermodynamic and fluid physics principles as applied to cooling system design (heat transfer, pressure drop, flow rate calculations)
• Experience with materials characterization techniques (e.g., FTIR, SEM/EDS, ICP-OES, or equivalent analytical methods)

Responsibilities

• Identify, evaluate, and qualify coolant formulations from multiple vendors for current and next-generation liquid-cooled datacenter servers
• Own the wetted materials specification and compliance for server hardware and coolant loops, including alloys, plastics, rubbers, elastomers, and sealing materials in contact with cooling fluids
• Evaluate and select materials for compatibility within wetted systems, considering long-term chemical interactions between coolants, metals, polymers, and elastomers
• Perform and direct thermodynamic and fluid physics calculations for cooling system design, including heat transfer, pressure drop, flow distribution, and system-level thermal stack analysis
• Assess coolant additive packages for chemical stability, long-term reliability, biological resistance, and environmental sustainability
• Perform materials characterization using spectroscopy and analytical tools including FTIR, SEM/TEM, EDS, and ICP-OES
• Mentor and educate mechanical design engineers on materials science fundamentals, coolant chemistry, and materials compatibility as it relates to their hardware designs
• Drive materials sustainability initiatives, evaluating environmental impact of coolant chemistries and wetted materials selections
• Own end-to-end quality of coolant from manufacturing site through datacenters, collaborating with chemical engineering and supply chain teams

Skills

Materials science

Materials engineering

Chemical engineering

Thermodynamics

Fluid physics

Coolant chemistry

Mentoring

Education

Bachelor's degree or higher in Materials Science, Materials Engineering, Chemical Engineering, Mechanical Engineering with a materials concentration

Tools

FTIR

SEM/EDS

ICP-OES

Spectroscopy

Job description

Amazon Web Services (AWS) Hardware Engineering seeks an experienced Materials Engineer to advance next‑gen liquid‑cooled datacenter platforms. You will evaluate coolant formulations, own wetted materials specs, and guide material choices across metals, polymers, and elastomers.

You will perform thermodynamic calculations, assess chemical stability, mentor mechanical engineers, and drive sustainability initiatives while collaborating with supply chain and manufacturing teams to ensure end‑to‑end