Sr. Manager, SIOP

Lennox International • Richardson, TX

2d • $139,200 - $182,700 • Hybrid

About The Position

The Sr. Manager, SIOP for the Lennox Residential HVAC business leads the end-to-end process that aligns sales forecasts, inventory, and production capacity to optimize inventory levels, meet customer demand, and drive operational efficiency. This cross-functional role balances demand and supply, ensuring the organization operates on a unified plan. This role reports to the Home Comfort Solutions SIOP team and works closely with the LRH Leadership Team.

Requirements

• Bachelor's degree in Supply Chain, Operations, Business, or related field
• 5–10 years in SIOP/S&OP, integrated demand-supply planning, and inventory optimization roles.
• Proficiency with ERP/MRP systems (e.g., SAP, APO, IBP), advanced Excel, statistical forecasting, and analytics tools.
• Strong understanding of demand planning, capacity modeling, inventory management, and network optimization.
• Capable of dissecting forecasts vs. actuals, developing simulations, and formulating 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
• Facilitator mindset with comfort moderating complex discussions.

Nice To Haves

• MBA/advanced degree preferred.

Responsibilities

• Lead and execute the SIOP process: Facilitate monthly cycles including demand review, supply planning, and executive consensus meetings.
• Demand & inventory planning: Generate and monitor forecasts, adjust safety stocks, and evaluate forecast performance.
• Supply alignment: Assess production and purchasing needs based on demand, adjusting schedules and material availability accordingly.
• Cross-functional collaboration: Work closely with sales, marketing, production, purchasing, and finance to ensure forecasts and operational plans are accurate and aligned.
• Meeting facilitation & coordination: Lead SIOP meetings, manage agendas, document action items, and ensure follow-through across functions.
• Data integrity & reporting: Maintain accurate data within ERP/MRP systems, track KPIs (forecast accuracy, inventory levels, on-time delivery), and drive continuous process improvement.
• Change agent: Champion process standardization, system enhancements, and operational improvements.

Benefits

• tuition reimbursement
• medical, dental, and vision insurance
• prescription drug coverage
• 401(k) retirement plan
• short-term disability insurance
• 8 weeks paid birthing leave
• 2 weeks paid bonding leave
• life and long-term disability insurance
• 12 days paid time off
• 2 paid well-being days
• 1 paid volunteer day
• 12 paid holidays
• 3 floating holidays

What This Job Offers

• Job Type: Full-time
• Career Level: Manager