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Westlake

Global petrochemicals and building products manufacturer

Senior Demand Planner

Supply Chain ManagementPosted on Nov 11
Full-timeHouston, TX, USANo salary listed

About the Job

Requirements

  • A bachelor's degree in Supply Chain or a related field is required.
  • At least five years of supply chain and/or demand management experience is required.
  • Demonstrated analytical skills, including the ability to develop concepts and actionable plans, are required.
  • Proficiency in Microsoft Excel, Word, Outlook, and Power BI is required.
  • Materials Requirements Planning (MRP) experience is required.
  • The ability to multitask in a fast-paced environment is required.
  • The role requires travel to sites as needed, up to 25%.
  • The role requires sitting, standing, walking, using hands to touch, handle, or feel, reaching with hands and arms, and talking or hearing frequently. It also requires occasionally stooping, kneeling, or crouching; lifting or moving up to 10 pounds regularly, up to 25 pounds frequently, and up to 50 pounds occasionally; and close, distance, color, peripheral, and depth vision, plus the ability to adjust focus.

Responsibilities

  • Develop and communicate the demand plan through the monthly Sales Inventory and Operations Planning (SIOP) process in collaboration with sales, marketing, and product management teams.
  • Develop and maintain relationships with key organizational stakeholders to secure buy-in and alignment on the demand plan.
  • Communicate the monthly demand plan to all business functional areas through the SIOP process.
  • Execute quantitative and qualitative forecasting activities to produce the demand plan.
  • Create statistical forecasts using different quantitative methods and levels of aggregation, compare results, and determine the best-fit forecasting model.
  • Work cross-functionally to resolve demand and supply prioritization in a constrained environment.
  • Maintain and enhance the demand dashboard for data visualization and the collection of assumptions during demand review meetings.
  • Standardize demand-planning activities and data analytics to support the SIOP process.
  • Implement and track forecast-error metrics to determine whether quantitative or qualitative inputs, or the overall forecasting methodology, need adjustment.
  • Coordinate demand-planning activities for the annual budget process, producing the annual business plan.
  • Support the design, implementation, and enhancement of the company's planning-system solution as part of its supply-chain digital strategy.
  • Use change-management methodologies to drive organizational change.

Desired Qualifications

  • ASCM/APICS certification is preferred.
  • Experience with enterprise resource planning (ERP) systems, including SAP S/4HANA, is preferred.
  • Experience with SIOP/integrated business planning (IBP) software platforms such as Arkieva, John Galt, or Kinaxis is preferred.

About the Company

Westlake

Global petrochemicals and building products manufacturer

Westlake Corporation manufactures and supplies petrochemicals, polymers, and building products worldwide. Its two segments are Performance and Essential Materials (polyethylene, styrene, PVC) and Housing and Infrastructure Products (siding, trim, stone, roofing, windows, PVC pipe and fittings). It is vertically integrated, controlling the full process from raw materials to finished goods to cut costs, ensure quality, and maintain a steady supply. It serves distributors, fabricators, and contractors across North America, Europe, and Asia, aiming to be a reliable, integrated supplier for construction and infrastructure needs.

Company size
1,001-5,000
Company stage
IPO
Headquarters
Houston, TX
Founded
1986

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