Sr. Manager, SIOP (Demand Planning Transformation)

Lennox International•Richardson, TX

3d•$139,200 - $182,700•Onsite

About The Position

The Sr. Manager, SIOP for Lennox Residential HVAC leads the end-to-end process aligning sales forecasts, inventory, and production capacity to optimize inventory, meet customer demand, and improve operational efficiency. This cross-functional role balances demand and supply and ensures the organization operates from a unified plan. The position reports to the Home Comfort Solutions SIOP team and works closely with the LRH Leadership Team. The role leads the Demand Planning transformation within SAP IBP, owning demand-planning process design, SAP IBP optimization, forecasting strategy, governance, analytics, and change management in an Integrated Business Planning environment. It drives process standardization, forecast accuracy improvements, and adoption of advanced planning and AI-enabled forecasting capabilities. The role partners with business leaders and Supply Chain, Sales, Marketing, Finance, and IT teams to establish and sustain best-in-class planning processes that improve forecast reliability, inventory productivity, service levels, and business performance. The successful candidate applies statistical forecasting, machine learning, AI-driven demand sensing, and predictive analytics to improve forecasts, identify demand risks and opportunities, and support data-driven decisions. Through planning expertise, SAP IBP knowledge, advanced analytics, and cross-functional leadership, the role drives digital transformation and continuous improvement, with measurable improvements in forecast accuracy, inventory optimization, service levels, on-time delivery, waste, carrying costs, capacity utilization, and SIOP/S&OP alignment. The workday includes meetings with Sales, Production, Purchasing, and Finance to update forecasts and resolve gaps. The role is office-based, with some time on-site in manufacturing and up to approximately 10% travel potentially required. It involves interaction with global and regional stakeholders, possibly across multiple time zones. This is a salaried exempt position with an annual starting salary range of $139,200–$182,700, and eligibility for an annual bonus under the applicable company plan. The role is not eligible for overtime.

Requirements

Bachelor's degree in Supply Chain, Operations, Business, or a related field.
5–10 years of experience in SIOP/S&OP, integrated demand-supply planning, and inventory optimization roles.
Proficiency with ERP/MRP systems such as SAP, APO, or IBP.
Proficiency in advanced Excel, statistical forecasting, and analytics tools.
Strong understanding of demand planning, capacity modeling, inventory management, and network optimization.
Ability to analyze forecasts versus actuals, develop simulations, and formulate cost-effective strategies.
Ability to lead and influence across functions, manage multi-stakeholder meetings, foster consensus, and guide change initiatives.
Strong interpersonal and organizational skills.
Strategic and tactical thinking.
Facilitation skills and comfort moderating complex discussions.

Nice To Haves

MBA or an advanced degree.

Responsibilities

Lead and execute the SIOP process, facilitating monthly demand review, supply planning, and executive consensus meetings.
Generate and monitor forecasts, adjust safety stocks, and evaluate forecast performance.
Assess production and purchasing needs based on demand, adjusting schedules and material availability as needed.
Collaborate with Sales, Marketing, Production, Purchasing, Finance, Supply Chain, IT, business leaders, and other stakeholders to align forecasts and operational plans.
Lead SIOP meetings, manage agendas, document action items, and ensure follow-through across functions.
Maintain accurate data in ERP/MRP systems and track KPIs including forecast accuracy, inventory levels, and on-time delivery.
Drive continuous process improvement, process standardization, system enhancements, and operational improvements.
Own Demand Planning process design, SAP IBP optimization, forecasting strategy, governance, analytics, and change management.
Promote adoption of advanced planning and AI-enabled forecasting capabilities, including statistical forecasting, machine learning, demand sensing, and predictive analytics.
Identify demand risks and opportunities and support data-driven decision-making.
Balance demand and supply to optimize inventory levels, customer service, operational efficiency, and capacity utilization.

Benefits

Annual bonus eligibility in accordance with the applicable company plan.
Tuition reimbursement.
Medical insurance.
Dental insurance.
Vision insurance.
Prescription drug coverage.
401(k) retirement plan.
Short-term disability insurance.
Eight weeks of paid birthing leave.
Two weeks of paid bonding leave.
Life insurance.
Long-term disability insurance.
Up to 12 days of paid time off per year, depending on date of hire and applicable eligibility requirements.
Two paid well-being days per year, depending on date of hire and applicable eligibility requirements.
One paid volunteer day per year, depending on date of hire and applicable eligibility requirements.
Twelve paid holidays per year, depending on date of hire and applicable eligibility requirements.
Three floating holidays per year, depending on date of hire and applicable eligibility requirements.