The Sales, Inventory and Operations Planning Intern will support the Product Line Planner in the development, maintenance, and execution of the SIOP (Sales, Inventory & Operations Planning) process. This role is mainly focused on creating and continuously improving Excel-based SIOP templates used to consolidate demand, supply, inventory, and capacity information. The intern will contribute to improving visibility, accuracy, and standardization of planning data while gaining hands‑on experience in supply chain planning, data analysis, and cross-functional coordination.