Supplier Development Engineer

Amprius Technologies, Inc. • Fremont, CA

3d • $120,000 - $190,000 • Onsite

About The Position

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.

Requirements

• 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).
• Demonstrated expertise in quality tools (e.g., FMEA, MSA, SPC, DoE) and auditing standards (e.g., VDA, ISO 9001/IATF 16949). Experience with ISO 9001 and AS9100 quality standards.
• Deep understanding of cell manufacturing processes (electrode coating, cell assembly, formation) or key battery components (anode/cathode materials, separators, electrolytes).
• Excellent communication, presentation, and interpersonal skills, with the ability to influence cross-functional teams and external partners.
• Ability to travel internationally up to 40% of the time to supplier sites in South Korea, US, and Europe.

Nice To Haves

• Fluency in Korean is a plus, given the global supply chain.

Responsibilities

• 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).
• 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
• 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.

Benefits

• Comprehensive compensation package includes base salary + RSUs. Salary range for this role is $120,000 to $190,000. Base salary will be determined based on knowledge, experience, and education.
• Health benefits include medical, dental and vision coverage. Medical options of HMO and PPO plans.
• Employer-funded Health Reimbursement Account (HRA). HSA compatible Medical Plan, FSA Options.
• Pet Health Insurance (dog & cats)
• Traditional and Roth 40l(k) Plans
• Generous vacation leave starts with 3 weeks annual accrual. 10 paid holidays. Sick time off.
• Cell phone reimbursement

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 11-50 employees