Younghoon Ryan Na
Production Control Material Management Manager @SK battery America
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WORK HISTORY
Production Control Material Management Manager @SK battery America
Commerce, GA, US
Core Competency: Systems Architecture & Data Governance]MES-ERP Data Synchronization & Integrity:• Served as the SAP MM Module Master, overseeing the complex data interface between MES (Manufacturing Execution System) and SAP ERP.• Eliminated data \"ghosting\" and interface errors by implementing a real-time monitoring protocol for IDoc and background jobs, achieving 100% data synchronization accuracy.• Led cross-functional audits to ensure shop-floor consumption (Backflushing) and scrap transactions perfectly aligned with systematic inventory levels.Financial Inventory Closing & SCM System Support:• Orchestrated the Monthly, Quarterly, and Year-end Inventory Closing processes for high-volume battery production lines.• Provided strategic support for GCOM (Internal Cost Accounting System), ensuring precise inventory valuation and direct feeding of SCM data into COGS (Cost of Goods Sold) reports.• Reduced the average inventory closing lead-time by 25% through process standardization and automated reconciliation tools.• Collaborated with the Finance team to perform Variance Analysis (Actual vs. Standard Cost), identifying and mitigating financial discrepancies.[Strategic Team Leadership & Operations]Multi-Functional Group Management:• Directly managed and mentored three specialized 3 teams: In-house Production Warehousing, Inventory Closing, and MRO Management Groups.• Applied Six Sigma DMAIC methodologies to warehouse operations, optimizing material flow and increasing space utilization efficiency.MRO Supply Chain Excellence:• Maintained preventing any production downtime due to technical material shortages.• Optimized MRO procurement cycles and safety stock levels, reducing carrying costs
EDUCATION
City Colleges of Chicago-Wilbur Wright College
Economics
Case Western Reserve University
Master’s Degree, Operations Research and Supply Chain
The Ohio State University
Bachelor of Business Administration (B.B.A.), Logistics, Materials, and Supply Chain Management
ABOUT YOUNGHOON RYAN NA
SAP MM Governance | Financial Inventory Closing Leader | MES–ERP Architecture | Lean Six Sigma Black Belt | EV Battery Manufacturing SCMSupply Chain Systems & Financial Governance Executive with 15+ years of experience leading ERP–MES architecture, inventory financial control, and operational transformation across EV battery manufacturing, aviation MRO, automotive Tier-1, and large-scale distribution networks.Lean Six Sigma Black Belt with deep expertise in SAP MM ownership, production control governance, cost accounting integration, and enterprise-level inventory optimization. Proven ability to eliminate systemic data discrepancies, accelerate financial closing cycles, and build audit-ready supply chain ecosystems.Recognized for bridging Operations, IT, and Finance to drive scalable, data-driven performance improvement.
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