GMS National Inventory & Demand Administrator

This position provides centralized inventory and demand-planning support across GMS Canada, helping ensure the right products are available in the right locations while optimizing inventory investment, improving visibility, and reducing excess and obsolete inventory. Position Summary The GMS National Inventory & Demand Administrator is responsible for supporting the planning, analysis, and coordination of inventory and product demand across GMS Canada. The role will work closely with Purchasing, Operations, Sales, suppliers, and GMS business units to improve inventory visibility, support forecasting and replenishment decisions, identify potential supply gaps, and help ensure appropriate inventory levels are maintained across the organization. A key focus of the position will be balancing product availability and customer service requirements with inventory investment, while identifying opportunities to reduce excess, aged, slow-moving, and obsolete inventory. The role will also provide centralized analytical support to the GMS Canada Purchasing team, helping translate sales trends, supplier lead times, customer requirements, seasonality, and business initiatives into actionable inventory and demand-planning information. Key Responsibilities Inventory Management & Analysis Monitor inventory levels across GMS Canada business units and locations. Analyze inventory positions, usage trends, inventory turns, days of supply, and product movement. Identify potential inventory shortages, overstock situations, and imbalances between locations. Support initiatives to optimize inventory investment while maintaining appropriate customer service levels. Identify aged, slow-moving, excess, and potentially obsolete inventory and coordinate appropriate action with Purchasing and business-unit teams. Support inventory balancing and product-transfer opportunities between GMS locations. Monitor changes in product demand that could create inventory or service risks. Demand Planning & Forecasting Analyze historical sales and usage patterns to support product-demand forecasts. Work with Purchasing, Sales, and Operations to incorporate known projects, customer requirements, promotions, new business, seasonality, and market changes into demand planning. Monitor actual demand against forecasts and identify significant variances. Support the development and continuous improvement of demand-planning processes across GMS Canada. Assist Purchasing in anticipating future product requirements and potential supply constraints. Provide visibility into unusual or emerging demand patterns requiring Purchasing or supplier action. Purchasing & Replenishment Support Provide inventory and demand information to support purchasing and replenishment decisions. Review inventory requirements against supplier lead times, minimum order quantities, freight considerations, and purchasing programs. Help identify opportunities to consolidate purchases and improve purchasing efficiency. Support the development and maintenance of appropriate stocking parameters for nationally managed products. Assist with inventory planning related to supplier transitions, product conversions, new product introductions, and discontinued products. Coordinate with Purchasing when changes in demand require adjustments to supplier orders or inventory strategies. Supplier & Supply-Chain Coordination Work with suppliers and the Purchasing team to maintain visibility into product availability and anticipated supply issues. Monitor supplier lead times and communicate material changes that could affect inventory availability. Assist in identifying products or categories where supply constraints may create customer-service risks. Support Purchasing with information required for supplier forecasting and supply-planning discussions. Coordinate inventory requirements relating to national supplier initiatives and product rollouts. New Product & Program Rollouts Support inventory planning for new products, cus…

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