SAP Operation(SAP ABAP) at Misuba (2025-02 – Present)
- KEPCO/KDN Developed key CBO, Interfaces, Enhancements, Forms, and Workflows supporting.
- Error analysis and User troubleshooting, performance tuning
- Managed plant/storage expansion project for overseas subsidiaries.
- Improved procurement/material management processes and master data management.
- Delivered ERP (Epergy IT intra) process improvements and customization.
- Monitored automation processes, improving procurement efficiency.
- Standardized ERP workflows, reducing lead time for purchasing.
SAP Operation(SAP ABAP) at Hasung C&I (2024-06 – 2024-11)
- Supported SAP procurement and material processes including contracts and invoice management.
- Enhanced CBO programs, RFC an I/F with legacy system.
SAP Operation(SAP ABAP) at Triplan (2022-08 – 2024-02)
- Managed end-to-end SAP purchasing processes including requests, contracts, and payments.
- Enhanced CBO programs, RFC an I/F with legacy system.
- Improved efficiency through CBO development and IMG customization.
- Created KPI reports and monitored monthly interface errors.
SAP Operation(SAP ABAP) at Nuritech (2022-04 – 2022-07)
- Supported SAP MM operations in chemical manufacturing.
- Managed purchase orders, contracts, and import processes.
- Performed SAP standard customizing & CBO development, error debugging.
SAP Operation(SAP ABAP) at Highvalue Consulting (2019-11 – 2021-07)
- Implemented BAdI/User Exit enhancements to automate approval and compliance checks.
- Delivered ERP process improvements and customization.
- Built integrations with WMS/logistics platforms via IDoc/RFC, including operational error-handling.
- Optimized high-volume queries and batch jobs using ST05-driven tuning and S/4HANA-friendly patterns.
Operation support – Operation Support Team at KHNP (Korea Hydro & Nuclear Power) (2017-05 – 2018-05)
- Managed SAP LDM system for commissioning test data and compliance.
- Trained local employees in ERP data management.
- Supported FANR/ENEC audits and provided documentation.
Piping material data management – Design Information Team at Taeyang Technology Development (2015-03 – 2017-03)
- Managed nuclear power plant piping material data and engineering databases. (JM, BOM)
- Contributed to projects: Shin-Hanul 1&2, Shin-Kori 5&6, UAEBNPP 1–4.