Seokwon Jeon
SAP MM Lead · ABAP Developer
Seoul, Republic of Koreawjs1725@gmail.comlinkedin.com/in/seokwon-jeon
Korean (native) · English (business)
Summary
SAP MM solution owner with 6+ years on S/4HANA On-Premise, from greenfield build to day-to-day operations. I own the system and technical layer behind purchasing and material master (configuration, classic ABAP, validation logic, authorizations, interfaces) and implement what the business and data-operations owners need. I reach for the SAP standard first and keep custom code and core modifications to a last resort. I work hands-on in classic ABAP, and I also design and ship internal tools and web/AI products.
Skills
Professional Experience
Lotte Innovate
2021.10 – PresentSeoul · onsite at an enterprise IS team
Manager · SAP MM Lead · 2026.02 – Present
- Technical lead for the SAP MM solution; own configuration, ABAP, validation logic, authorizations and interfaces, implementing change with the business and data-operations owners
- Keep enterprise-wide ERP data consistent and tune the system, coordinating with SAP BC and related teams
- Lead architecture discussions with external partners and internal system-integration initiatives
- As Purchasing & Production part lead, own authorization administration (PFCG roles/objects), STMS transport and system monitoring. Built a delegated tool that lets business leads grant roles directly and in bulk, removing standard PFCG's profile-generation and mass-assign limits
Senior · SAP MM/PM · ABAP · 2021.10 – 2026.02
- SAP MM/PM operations support for domestic and overseas subsidiaries
- Developed and enhanced ABAP programs to improve system performance and business processes
IDS & TRUST Co., Ltd.
2020.01 – 2021.10Seoul
SAP MM & ABAP Developer · 2020.01 – 2021.10
- Maintained and supported SAP MM for domestic pharmaceutical, cosmetics and manufacturing clients; developed, modified and monitored ABAP programs
- Built process-improvement plans via weekly purchasing-team meetings; supported proposals for new customers
- Identified and optimized performance-critical ABAP programs every month
Selected Projects
Lotte Wellfood · S/4HANA Greenfield Implementation
2023.01 – 2024.03Owned SRM front/back/RFC; supported MM config & development
- Renewed 80+ RFCs interfacing to SRM (MM·LE·QM·IM)
- Built 10 new SRM screens (Nexacro 17); created/modified 50+ ABAP programs
Lotte Confectionery · SRM System Renewal
2021.12 – 2022.03Deputy Manager
- Renewed the vendor web (SRM) for IE11 end-of-life; built RFCs and CBO across purchasing, inventory, production, quality and import
- Implemented external processing in production
Daewoong Pharmaceutical · Salesforce Interface
2021.07 – 2021.08ABAP Developer
- Built RFCs transporting SAP master data to Salesforce
Cosmax · Quality Confirmation Process
2021.05 – 2021.06ABAP Developer
- Improved & documented conformity/nonconformity determination across materials; built related RFCs/programs
Daewoong Pharmaceutical · SAP DB Encryption
2021.01 – 2021.04Deputy Manager
- DB encryption for a B2B→B2C expansion: legal review and exec briefing, vendor PoC and RFP
- Technical support for the rollout (12 RFCs/programs)
Daewoong Pharmaceutical · ITGC Implementation
2020.07 – 2020.09SAP role analyst & manager
- Real-time critical-authorization monitoring (RSUSR008_009_NEW); role create/change/delete manuals
- Completed authorization checks and IMG configuration
ENEX · Barcode System
2020.05 – 2020.09ABAP Developer (CBO · RFC)
- New barcode system for storage in/out (6 RFCs, 4 programs)
Education
Lotte Innovate ABC Track (AI) · AI Track, Intermediate + Advanced (Built an LLM chatbot, computer-vision segmentation, and more)
2024 – 2025Credit Bank System · Bachelor of Engineering, Computer Engineering (GPA 4.0 / 4.5)
2020 – 2021IITP SAP Vocational Training · SAP young-talent program · top completion (SD · MM · ABAP · Fiori, 6 months)
2019Yeungnam College · Associate Degree, Computer Information (GPA 4.0 / 4.5)
2013 – 2019