Process Engineer – Jelly Roll Winding, Cell Assembly

EnerSys

. Develop, optimize, and sustain jelly roll winding processes for cylindrical lithium-ion battery cell formats including 18650, 21700, and 46xx cells .

Posted 9/17/2026full-timeGreenville • South Carolina • United StatesMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in developing and optimizing jelly roll winding processes for lithium-ion batteries, with a strong focus on process validation, equipment qualification, and continuous improvement methodologies. Proficient in collaborating across teams to ensure high-quality manufacturing and compliance with industry standards.

Highest-signal resume keywords

Lithium-Ion Battery ManufacturingCylindrical Cell WindingProcess ValidationSix Sigma Green BeltRoot Cause Analysis

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Process OptimizationWinding Parameter ControlElectrode PreparationManufacturing Defect ResolutionData AnalysisContinuous Improvement TechniquesProcess Capability AnalysisQuality Systems ComplianceDry-Room StandardsHigh-Volume Manufacturing

Soft Skills

CollaborationProblem-SolvingCommunication

Tools & Technologies

Microsoft OfficeMESSCADAAutomated Inspection SystemsProduction Reporting Tools

Certifications & Qualifications

Six Sigma Green BeltSix Sigma Black Belt

Industry Keywords

Battery TechnologyManufacturing EngineeringProduction EngineeringFactory Acceptance TestingSite Acceptance TestingGigafactory DeploymentProcess DocumentationTraining MaterialsPFMEAContamination Control

Tech Stack

Tools & technologies

Assembly

About the role

Key responsibilities & impact

Develop, optimize, and sustain jelly roll winding processes for cylindrical lithium-ion battery cell formats including 18650, 21700, and 46xx cells
Define, validate, and control critical winding parameters including web tension, winding speed, alignment, overlap, separator handling, mandrel design, and jelly roll geometry
Support cell assembly operations including electrode preparation, tab welding, insulation application, jelly roll insertion, beading, sealing, electrolyte filling interfaces, and pre-formation preparation activities
Analyze process performance and implement improvements to increase yield, throughput, process capability, operational efficiency, and product quality
Investigate and resolve manufacturing defects including alignment issues, separator damage, winding defects, dimensional deviations, contamination concerns, burr-related defects, and internal short risks
Support equipment selection, supplier technical reviews, Factory Acceptance Testing (FAT), Site Acceptance Testing (SAT), commissioning, qualification, and production startup activities
Collaborate with engineering, product development, quality, maintenance, automation, and production teams to transfer processes from development and pilot operations to high-volume manufacturing
Develop and maintain process documentation including work instructions, process standards, training materials, PFMEA inputs, control plans, and operating procedures
Apply Root Cause Analysis, 8D, SPC, process capability analysis, and continuous improvement techniques
Ensure compliance with dry-room standards, safety requirements, quality systems, contamination control requirements, and battery manufacturing best practices
Participate in startup, commissioning, technology transfer, and manufacturing readiness activities supporting Gigafactory deployment and production ramp-up

Requirements

What you’ll need

Bachelor's degree in Mechanical Engineering, Production Engineering, Electrical Engineering, Manufacturing Engineering, Battery Technology, or a related technical discipline required
Technician or master craftsman qualifications with significant applicable experience may also be considered
Three (3) or more years of experience in lithium-ion battery manufacturing with emphasis on cylindrical cell winding and assembly operations preferred
Experience supporting equipment qualification, process validation, commissioning, startup, and production ramp-up activities preferred
Experience working in high-volume automated manufacturing environments preferred
Proficiency with Microsoft Office applications
Experience with MES, SCADA, manufacturing databases, automated inspection systems, and production reporting tools preferred
Experience with process monitoring and data analysis tools preferred
Six Sigma Green Belt or Black Belt certification preferred
Additional manufacturing, quality, or engineering certifications are beneficial
Domestic and international travel is required

Benefits

Comp & perks

Equal employment opportunities and protection against discrimination and harassment
Domestic and international travel opportunities/requirement