End of Line; EOL Quality Engineer – Battery Cell Development Center

Job Description The Role

The Formation and EOL Quality Engineer is responsible for establishing and leading product and process quality assurance for formation, aging, and end-of-line testing within the Battery Cell Development Center (BCDC).

This role defines critical quality characteristics, acceptance criteria, control strategies, reaction plans, and lot disposition standards to ensure safe, reliable, and conforming cells through pilot and scale-up activities. The role serves as the independent quality voice for formation and EOL operations, partnering with process engineering, manufacturing, and cell design teams to prevent defects, reduce escape risk, and drive robust corrective actions.

• Own process quality for new battery chemistry campaigns from formation through end‑of‑line testing including automated material movements in the area.
• Update and maintain control plans for critical quality characteristics in formation and end of line testing such as charge/discharge profiles, gas evolution, capacity, impedance, leakage, and voltage decay behaviors in the finished cell.
• Integrate CT and other scanning techniques into end of line quality control, characterizing internal features linked to formation and cell performance.
• Lead data‑driven monitoring for end of line testing and cell cycling for lot-to-lot verification.
• Execute end of line test quality and inspection strategies to ensure that finished cells meet expected performance targets including validation of end of line vision systems.
• Create and maintain other quality documentation (process flow diagrams, work instructions, risk analyses, sampling plans etc.) for the formation and end of line area.
• Coordinate measurement system studies (e.g., GR&R / MSA) for key in‑line and offline formation and end of line measurements.
• Ensure measurement systems, test methods, and inspection technologies are capable and suitable for product acceptance decisions.
• Provide quality sign‑off for hold, release, potential rework, or scrap decisions for formation and EOL lots.
• Challenge process, equipment, or recipe decisions where cell quality risk is not adequately mitigated.
• Lead containment, quarantine, and disposition activities for suspect or nonconforming cells utilizing structured problem solving (e.g., 5‑Why, fishbone, 8D‑style approaches) for formation or end of line issues.
• Own root cause investigation and corrective/preventive actions for formation and EOL quality issues, including verification of effectiveness.
• Track formation/EOL quality KPIs such as yield loss by failure mode, control limit violations, false reject and/or escape rates.
• Create defect pareto charts, first time quality metrics, and leading quality indicators to develop continuous improvement opportunities.
• Lead regular reviews of quality trends and drive cross functional action plans with engineering, operations, and leadership.
• Assess quality impact of new materials, equipment modifications, software changes, and automation updates before implementation.
• Audit inspection methods, control plans, and standardized reaction plans in formation and EOL operations.
• Ensure cell traceability is maintained for all inputs into the finished cell.
• Establish reaction plans in the control plan for out‑of‑control conditions, abnormal trends, and test failures.
• Provide technical leadership for the BCDC as it relates to quality testing for formation chemistry, materials behavior, and structural mechanisms in the finished cell.
• Support new cell builds, equipment designs, and new material introductions, ensuring cell quality and testing strategies remain grounded in sound electrochemistry and materials science fundamentals.

• Bachelor’s degree in chemistry, materials science, chemical engineering, or a closely related field.
• 5+ years of experience in a quality role for battery manufacturing or pack design, focusing on formation and end of line.
• Hands‑on experience in cell or module production environments, focusing on formation, aging, and end of life testing.
• Understanding of lithium‑ion cell electrochemistry, formation, electrode/electrolyte interfaces, and…