Supplier Development Engineer - Cell Assembly

Amprius Technologies, Inc.•Fremont, CA

7d•$120,000 - $190,000

About The Position

Amprius Technologies is seeking a Senior Supplier Development Engineer to lead technical engagement with suppliers supporting advanced lithium-ion cell materials, components, and contract manufacturing. The role qualifies and develops suppliers, industrializes new processes, and drives launch readiness from NPI through volume production. The ideal candidate has strong battery manufacturing knowledge, hands-on supplier troubleshooting capability, and sound judgment in quality, process control, and scale-up risk.

Requirements

Demonstrated experience taking products or processes from NPI through qualification and ramp to volume production with external suppliers or contract manufacturers.
Strong understanding of battery cell manufacturing processes, such as electrode coating, cell assembly, and formation, or key battery components such as anode/cathode materials, separators, and electrolytes.
Working knowledge of quality and process-control tools, including PFMEA, control plans, SPC, MSA/GRR, Cpk, DOE, and structured problem solving.
Ability to analyze manufacturing and test data, draw sound technical conclusions, and drive actionable improvement plans with suppliers.
Strong written and verbal communication skills, including the ability to influence cross-functional teams and external partners.
B.S. or higher in Chemical Engineering, Materials Science, Mechanical Engineering, Electrical Engineering, or a related technical discipline.
At least 5 years of experience in supplier development, manufacturing engineering, quality engineering, or supplier industrialization within lithium-ion batteries, battery materials, or closely related advanced manufacturing.
Experience conducting supplier audits and assessing compliance with quality management standards such as ISO 9001, IATF 16949, and/or AS9100.
Ability to travel domestically and internationally up to approximately 30–40%.

Nice To Haves

Experience in high-volume manufacturing environments.
Familiarity with battery failure analysis, metrology, and qualification testing.
Korean language capability.

Responsibilities

Lead technical selection, qualification, and development of suppliers for battery raw materials, cell components, and contract manufacturing partners.
Drive supplier industrialization from initial process assessment through pilot, qualification, and production ramp, ensuring readiness for volume manufacturing.
Evaluate supplier manufacturing flows, process capability, capacity, and expansion plans to identify constraints, mitigate risk, and support long-term scaling.
Partner with suppliers to optimize process performance, yield, quality controls, and manufacturability across material and cell production operations.
Establish and approve quality-planning deliverables, including APQP/PPAP elements, control plans, PFMEA, SPC, MSA, and process validation activities.
Support implementation and improvement of IQC, IPQC, and OQC systems at supplier sites.
Lead on-site supplier audits focused on technical capability, manufacturing discipline, quality systems, and production readiness.
Drive supplier failure analysis and corrective action using methods such as 8D, root cause analysis, and verification of corrective and preventive actions.
Work cross-functionally with engineering, quality, operations, and supply chain teams to align supplier capability with product requirements, design intent, and launch milestones.
Serve as the primary technical interface to supplier engineering and quality teams, communicating risks, actions, and progress to internal stakeholders.