PMTS, Process Engineer

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Quantum Scape is on a mission to transform energy storage with solid-state lithium-metal battery technology. The company’s next-generation batteries are designed to enable greater energy density, faster charging and enhanced safety to support the transition away from legacy energy sources toward a lower carbon future.

The Manufacturing and Yield team is a hands-on group of process and manufacturing engineers dedicated to ensuring stable, high-quality Gen 1 battery cell production. We work at the intersection of process control and manufacturing execution - maintaining process stability, driving yield improvement, and resolving excursions across both the FSD and Development production lines. Our team values technical rigor, cross-functional collaboration, and a continuous improvement mindset.

We are seeking a highly experienced Process Engineer at the Principal Member of Technical Staff (PMTS) level to own critical manufacturing processes on the Gen 1 battery line. The ideal candidate brings deep expertise in precision process engineering, excels at leading complex process investigations, and operates with a high degree of independence to drive process stability, control, and continuous improvement across both the FSD and Development production lines.

• Own assigned manufacturing processes on the Gen 1 battery line, covering both FSD and Development line operations.
• Define, maintain, and optimize process recipes, control plans, and process specifications to ensure stability and repeatability.
• Establish and maintain process monitoring strategies - including control limits, SPC charts, and response protocols for out-of-control conditions.
• Lead process qualification and requalification activities following equipment maintenance, upgrades, or process changes.

• Identify yield loss mechanisms and lead root cause analysis using structured methodologies (e.g., 8D, fishbone, 5-Why).
• Design and execute DOEs to optimize process parameters, improve process margins, and reduce variability.
• Analyze production and metrology data to develop process insights and implement data-driven improvements.
• Partner with Quality and Metrology teams to define and maintain CTQ metrics and measurement systems for process-critical attributes.

• Diagnose and resolve complex process and equipment interactions, minimizing yield impact and production downtime.
• Develop and maintain process-level troubleshooting guides and response procedures for production excursions.
• Collaborate with equipment engineers and technicians to ensure process requirements are reflected in maintenance and PM strategies.
• Maintain and update SOPs, process specifications, and engineering documentation for all assigned process areas.

• Work closely with Manufacturing, Metrology, Quality, and Operations teams to ensure process requirements are understood and met across functions.
• Provide technical guidance and mentorship to junior engineers on process fundamentals, control strategy, and best practices.
• Represent assigned processes in engineering reviews, CRB submissions, and cross-functional technical discussions.
• Support process transfer activities to higher-volume production lines, ensuring process knowledge and control strategies are effectively scaled.

• Bachelor’s degree in Materials Science, Chemical Engineering, Mechanical Engineering, Chemistry, or a related field, with 8+ years of process engineering experience in a manufacturing environment; or Master’s degree with 6+ years of relevant experience.
• Demonstrated expertise in precision process engineering in a production or high-precision manufacturing environment, preferably in battery, semiconductor, or related industries.
• Hands-on experience developing, optimizing, and controlling automated manufacturing processes.
• Strong proficiency in statistical process control (SPC), DOE methodology, and data analysis tools (Python, JMP, or equivalent).
• Proven ability to…