Supplier Development Engineer

About Amprius! Amprius Technologies, Inc. is a leading manufacturer of high-energy, high-power lithium-ion batteries, delivering the industry's highest commercially available energy density. Headquartered in Fremont, California, Amprius maintains an advanced R&D lab and a MWh-scale manufacturing facility dedicated to silicon anode and cell production. For more information about the company, please visit . Summary Amprius Technologies is seeking an experienced Supplier Development Engineer that will be instrumental in ensuring the quality, capability, and reliability of our lithium-ion battery cell and component suppliers. This role involves deep collaboration with both internal engineering/quality teams and external supplier partners to develop, implement, and maintain world-class manufacturing processes and quality systems. Job Responsibilities Supplier Quality and Process Development * Drive the selection, qualification, and ongoing development of suppliers for new battery cell chemistries and components. * Conduct on-site audits at potential and existing supplier facilities to assess manufacturing processes, quality management systems, and technical capabilities. * Lead the development and approval of APQP/PPAP (Advanced Product Quality Planning / Production Part Approval Process) packages to ensure components meet strict specifications. * Implement continuous improvement programs at supplier sites, utilizing tools such as Six Sigma, Lean Manufacturing, and SPC (Statistical Process Control). Industrialization * Lead supplier capacity analysis to drive in-depth, collaborative studies with key suppliers to identify bottlenecks, measure utilization, and establish clear scaling strategies. * Validate long term capacity expansion plans to ensure manufacturing strategies align with demand forecasts, technology roadmaps, and quality requirements. * Oversee manufacturing scale-up and qualification processes. Monitor pilot runs, execute successful ramp-ups, and ensures quality metrics are met before mass production. * Develop and implement robust manufacturing risk mitigation strategies with suppliers Collaboration and Communication * Work closely with Design Engineering to influence product design for manufacturability (DFM) and quality. * Serve as the primary technical liaison between Amprius and the supplier's engineering and quality teams. * Facilitate joint problem-solving activities using 8D methodology to quickly address and permanently resolve quality issues. * Prepare and present detailed reports on supplier performance, risk assessments, and development progress to internal stakeholders. Education, Certifications, Experience * B.S. in Electrical Engineering, Chemical Engineering, Materials Science, or a related technical field. * 5+ years of experience in supplier development, quality engineering, or manufacturing engineering within the Lithium-Ion Battery sector (cell or pack level). Physical Demands & Work Location: * Fremont, CA: This is an on-site job. Reliable commute or planning to relocate before starting work is required. * Work performed in an office environment and requires the ability to operate standard office equipment and keyboards Travel Requirements: Ability to travel internationally up to 40% of the time to supplier sites in South Korea, US, and Europe.

Created: 2026-04-02