Duhui Lee
Cartersville
Summary
Materials Engineering graduate with hands-on experience in manufacturing operations within a high-volume production environment. Experienced in production data analysis, equipment monitoring, SOP development, and process improvement through equipment downtime analysis, cycle-time studies, and Excel-based data visualization. Adaptable, detail-oriented, and comfortable collaborating across manufacturing teams to support daily operations and continuous improvement.
Overview
1
1
year of professional experience
1
1
Certification
Work History
Wafer Process Engineering Intern
Hanwha Q Cells
Cartersville
09.2025 - Current
- Collected and analyzed equipment downtime data across 18 production machines (4 Pre-C, 6 Final-C, and 8 WINS) to identify recurring production issues.
- Measured and analyzed cycle times for splitter, separator, AMR, and 6-axis robot operations to support process improvement projects.
- Operated and troubleshot WINS inspection equipment using HMI systems to support stable daily production.
- Inspected silicon wafers, reviewed defect images, and prepared production reports, including Overkill and G12 reports.
- Created Excel dashboards and Pivot Table reports to organize and visualize equipment downtime, production trends, and inspection data.
- Developed new standard operating procedures (SOPs) for wafer handling, recipe modification, defect image review, and LSC error troubleshooting.
- Collected and recorded process data, including beam cutting length, equipment runtime, temperature, humidity, and indoor environmental conditions for daily process monitoring.
- Verified operator compliance with cleaning SOPs and collected process data to support standardized manufacturing practices.
- Collaborated with process and equipment engineers to investigate equipment issues and support continuous improvement activities.
Module Production Intern
Hanwha Q Cells
Cartersville
12.2025 - 02.2026
- Inspected defective cells and modules to determine repair requirements during the manufacturing process.
- Performed soldering repairs on defective cells and modules by following established repair procedures.
- Conducted post-repair inspections to verify product quality before returning repaired products to production.
- Maintained production and quality standards while repairing nonconforming products in a high-volume manufacturing environment.
- Worked in rotating day and night shifts to support continuous manufacturing operations and production schedules
Education
Bachelor of Science - Materials Engineering
Keimyung University
South Korea08-2025
Skills
- Production Data Analysis
- Process Monitoring
- Downtime Analysis
- Cycle Time Analysis
- Root Cause Analysis
- Quality Inspection
- Microsoft Excel (Pivot Tables, Dashboards, Charts)
- SOP Development
- Equipment Troubleshooting
- HMI Operation
- Soldering
Certification
- Microsoft Office Specialist (MOS): Excel Expert — Microsoft
- Industrial Hazardous Materials Engineer — Human Resources Development Service of Korea (HRDK)
Timeline
Module Production Intern
Hanwha Q Cells
12.2025 - 02.2026
Wafer Process Engineering Intern
Hanwha Q Cells
09.2025 - Current
Bachelor of Science - Materials Engineering
Keimyung University