Lennox International

Sr. Manager, SIOP

Lennox International$139K — $182K *
Manufacturing & Automotive
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in Supply Chain, Operations, Business, or related field; MBA/advanced degree preferred.
  • 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.

Responsibilities

  • Lead and execute the SIOP process, facilitating demand review and supply planning cycles.
  • Generate and monitor forecasts, adjusting safety stocks, and evaluating forecast performance.
  • Assess production and purchasing needs based on demand and adjust schedules accordingly.
  • Collaborate cross-functionally with sales, marketing, production, purchasing, and finance for operational alignment.
  • Facilitate SIOP meetings, manage agendas, document action items, and ensure follow-through.
  • Maintain accurate data within ERP/MRP systems, track KPIs, and drive process improvement initiatives.
  • Champion process standardization and system enhancements for operational efficiency.

Benefits

  • Tuition reimbursement for continued education.
  • Comprehensive medical, dental, and vision insurance.
  • 401(k) retirement plan and short-term disability insurance.
  • 8 weeks paid birthing leave and 2 weeks paid bonding leave.
  • Generous paid time off, including 12 days PTO, 2 well-being days, and 1 volunteer day.
Full Job Description
Role Summary:

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.

Core 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.

Typical Workday & Environment
  • A dynamic mix of meetings with sales, production, purchasing, and finance teams to update forecasts and resolve gaps.
  • Office-based with some on-site time in manufacturing or ; up to ~10% travel may be required.
  • Interaction with global/regional stakeholders, possibly across multiple time zones.

Desired Outcomes:
  • Improved forecast accuracy and inventory optimization.
  • Enhanced service levels and on-time delivery.
  • Reduced waste, lower carrying costs, and improved capacity utilization.
  • Streamlined SIOP/S&OP practices and stronger cross-functional alignment.


What We Are Looking For

Key Qualifications & Skills
  • Education: Bachelor's degree in Supply Chain, Operations, Business, or related field; MBA/advanced degree preferred.
  • Experience: 5-10 years in SIOP/S&OP, integrated demand-supply planning, and inventory optimization roles.
  • Technical expertise:
    • 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.
  • Analytical & problem-solving: Capable of dissecting forecasts vs. actuals, developing simulations, and formulating cost-effective strategies.
  • Communication & leadership: Ability to lead and influence across functions, manage multi-stakeholder meetings, foster consensus, and guide change initiatives.
  • Soft skills:
    • Strong interpersonal and organizational skills
    • Strategic and tactical thinking
    • Facilitator mindset with comfort moderating complex discussions.


What We Offer

Compensation: This is a salaried exempt role. The starting salary range for this role and market is between $139,200-$182,700 annually. Factors that may affect starting salary include geography/market and the skills, education, experience, and other qualifications of the successful candidate. Employees in this role are also eligible for an annual bonus in accordance with the terms of the Company's applicable plan. Employees in this role are not eligible for overtime.

Benefits: Subject to applicable eligibility requirements, the following benefits are offered for this role: 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.

Depending on date of hire, and subject to applicable eligibility requirements, new employees in this role also receive up to: 12 days paid time off, 2 paid well-being days, 1 paid volunteer day, 12 paid holidays, and 3 floating holidays per year.

About Lennox International

Lennox International is an American company that designs, manufactures, and markets HVAC equipment and services. The company's products include air conditioners, furnaces, heat pumps, packaged units, air handlers, and indoor air quality equipment. Lennox International was founded in 1895 and is headquartered in Richardson, Texas. The company operates in North America, Europe, and Asia. Lennox International is listed on the New York Stock Exchange (NYSE) and is a component of the S&P 500.
Learn more about Lennox International
Size
11,000 employees
Market Cap
$8.5 billion
Industry
Net Income
$356.3 million
Founded
1895
5 Year Trend
+2.9%
Revenue
$3.6 billion
NASDAQ

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