Demand Planning Specialist

Department:Supply Chain

Reports To: Associate Director, Supply Chain

FLSA Status: Exempt

Location: Garland, TX | Hybrid

The Demand Planning Specialist supports the demand forecasting and SIOP processes through forecast maintenance, statistical analysis, performance tracking, and cross-functional coordination. This role is responsible for maintaining baseline forecasts, monitoring forecast accuracy, supporting the monthly demand planning process, and providing analytics that support SIOP and business planning decisions. Strong analytical skills are required, including proficiency in Excel, Power Query, and data analysis tools to support forecasting, reporting, and decision-making.

This position provides exposure to cross-functional planning activities and broader supply chain business processes, offering opportunities for growth within Supply Chain Planning.

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• Maintain rolling demand forecast files and update statistical baseline projections
• Generate and maintain statistical forecast models
• Analyze historical sales trends, seasonality, demand variability, customer trends, promotions, product introductions, and market activity to understand demand drivers and improve forecast quality.
• Collect, reconcile, and validate forecast inputs from Sales, Product Management, and cross-functional stakeholders to support the monthly demand planning process.
• Own the maintenance and execution of the monthly demand planning cycle, ensuring forecasts are updated, reviewed, and submitted according to established timelines.
• Track and report forecast accuracy metrics (MAPE, bias, variance)
• Identify forecast variances and perform structured root cause analysis
• Identify and implement opportunities to improve forecast accuracy, forecast processes, and planning visibility through analysis and continuous improvement initiatives.
• Maintain forecast parameters, planning attributes, and master data within ERP and demand planning systems to support forecast accuracy and reporting integrity.
• Update ABC/XYZ classifications and relevant planning attributes
• Prepare demand review analytics, present forecast performance metrics, and support monthly SIOP reviews and decision-making.
• Support development of forecast performance metrics and dashboards
• Support inventory planning and supply planning decisions through forecast analysis and demand insights.

Success in this role is demonstrated through:

• Timely completion of monthly demand forecast updates and demand planning cycle deliverables
• Continuous improvement in forecast accuracy and reduction of forecast bias
• High-quality analytics supporting demand reviews and SIOP decision-making
• Accurate maintenance of planning master data, forecasting parameters, and system attributes
• Effective collaboration with Sales, Product Management, Operations, and Supply Chain stakeholders
• Identification and implementation of forecasting process improvements

• None

Adaptability – Adapts to changes in the work…