Senior Demand Planner

The Senior Demand Planner owns demand accuracy and integrity across the S&OP process. This person is the primary demand-side point of contact for S&OP communications with the sales organization and is accountable for the statistical forecast, forecast adjustments, and other demand drivers, most notably safety stock, that feed the monthly S&OP cycle.

• Own and lead all demand-side S&OP communication with sales: run the monthly demand review, publish the consensus forecast, and explain forecast changes and risks to sales and executive leadership.
• Build and maintain the statistical baseline forecast at the appropriate level (SKU/customer/region), applying time-series and other quantitative methods, and layer in sales/marketing input to produce a consensus demand plan.
• Own forecast accuracy and bias measurement (e.g., MAPE, bias) and drive root-cause analysis and corrective action when performance slips.
• Set and maintain safety stock and other demand-side planning parameters that protect service levels without over-investing in inventory.
• Own demand sensing for new product introductions, promotions, and other demand shaping events.
• Ensure all demand data in the planning system (forecasts, overrides, safety stock, master data) is accurate and current.
• Partner with the Senior Supply Planner and operations leadership to ensure the demand plan is realistic, communicated in time, and reconciled against supply constraints.
• Present the demand plan and key assumptions each month as part of the executive S&OP cycle.

• Bachelor's degree in supply chain, statistics, data science, applied math, or a related field.
• 5+ years of experience in demand planning or forecasting, with demonstrated ownership of forecasting within a formal S&OP or IBP process.
• A track record of having built and executed a successful S&OP demand plan in a prior role
• Extensive, hands‑on experience in forecasting and related quantitative disciplines: statistics, time-series methods, and data science techniques.
• Strong data skills: advanced Excel and SQL required; experience with a demand planning/forecasting platform (SAP IBP, Kinaxis, o9, Blue Yonder) and, ideally, Python or R for forecast modeling.
• Exceptional communication skills, with the ability to explain forecast assumptions, changes, and risk to sales and executive stakeholders in plain terms.

• APICS/ASCM certification (CPIM or CSCP).
• Experience with statistical or machine-learning-based forecasting tools.
• Industry experience in manufacturing, distribution, or CPG.

M-D Building Products has been a trusted name in American construction for over 106 years. Founded in 1920, we have spent more than a century designing, manufacturing, and distributing the products that builders, contractors, and homeowners depend on to get the job done right. What started as a focused commitment to quality weatherstripping has grown into one of the most recognized and respected product portfolios in the construction industry.

We are proud to be an American manufacturer. Every product bearing the M-D name is made right here in the United States, with production facilities in Oklahoma City, Oklahoma, our home and headquarters, as well as Louisville, Kentucky, and Gainesville and Brooklet, Georgia. Our facilities are home to skilled, dedicated teams who bring the same pride and craftsmanship to every product.

At M-D, we don't just compete in our categories, we lead them. Our products are industry leaders or strong contenders for industry leadership across every line we carry. That standard of excellence isn't accidental. It results from more than a century of listening to our customers, investing in our people, and refusing to settle for good…