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SUMMARY
The Manager, Supply Chain Planning, leads the team responsible for integrated demand and production planning for the Polyethylene business unit. The role owns the forecast cycle, supply/supply balancing, and development of feasible production plans aligned with Sales, Operations, and Logistics. The ideal candidate is a hands-on leader with a passion for developing others, has strong analytical capability and business acumen and understands key concepts such as system constraints, inventory optimization, and the value tradeoffs required in plastics, chemicals or other similar manufacturing supply chain.
DUTIES AND RESPONSIBILITIES
May include, but are not limited to, the following:
Leadership & Team Management
Lead, coach, and develop a team of analysts and production planners.
Ensure consistent planning processes, playbooks, and performance expectations.
Provide daily/weekly guidance on priorities, exceptions, and risk management.
Sales and Operations Planning
Lead the S&OP cycle across all Polyethylene production units.
Oversee rolling demand forecasts ensure accuracy, bias control, and alignment with macro environment and sales forecast.
Facilitate the monthly demand reviews and prepare consolidated S&OP.
Manage production planning considering economic run lengths, grade sequencing, outages, and capacity constraints.
Develop and present supply/demand scenarios, risks, and opportunities for monthly executive alignment.
Drive execution of the agreed operating plan and communicate supply positions.
Inventory Management and Fulfillment
Set and maintain inventory and safety stock targets.
Monitor inventory health (turns, aging, SLOB) and drive mitigation.
Optimize inventory positioning across domestic and export channels.
Develop strategy around turnarounds.
Coordinate shipments and inventory reconciliation.
Systems, Data, & Process Improvement
Champion planning system enhancements and tool utilization.
Identify and lead improvement in forecast accuracy, scheduling stability, and cycle adherence.
Build and maintain dashboards/KPIs supporting planning performance.
Maintain planning master data and documentation.
Key Performance Indicators
Forecast accuracy and bias.
Production plan adherence and schedule stability.
Inventory turns, DIO, SLOB.
OTIF and service levels.
S&OP meeting quality and decision readiness.
EDUCATION, EXPERIENCE AND QUALIFICATIONS
Required
Bachelor’s degree in Business, Supply Chain, Engineering, or related discipline.
10+ years total work experience in supply chain, operations, or business function.
2+ years experience in business management or supply chain planning.
2+ years people leadership.
Experience in chemicals, plastics, polymers, or product manufacturing.
Strong analytical, communication, and cross-functional influence skills.
Preferred
Master’s degree or MBA.
Experience with advanced planning tools.
APICS/ASCM certifications (CPIM, CSCP).
Knowledge of Polyethylene or similar polymer production
PHYSICAL DEMANDS
While performing the duties of this job, the employee is frequently required to sit; stand; walk; use hands to touch, handle, or feel; reach with hands and arms; and talk or hear. The employee is occasionally required to stoop, kneel, or crouch. The employee must regularly lift and/or move up to 10 pounds. Specific vision abilities required by this job include close vision, distance vision, color vision, peripheral vision, depth perception, and ability to adjust focus.
WORK ENVIRONMENT
The noise level in the work environment is usually moderate, as normally based in an office. Some of the work may be required in the operating units which can require usage of required PPE including safety glasses, hearing protection, etc. May also result in exposure to outside elements and may require usage of stairs and elevators. 10% travel including air travel or auto travel may occasionally be required.
Westlake is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to any characteristics protected by applicable legislation.
If you are an active Westlake employee (or an employee of any Westlake affiliates), please do not apply here. You will apply via the Jobs Hub application in Workday.
Westlake Chemical Corporation Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Westlake Chemical Corporation and has not been reviewed or approved by Westlake Chemical Corporation.
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Retirement Support — Feedback suggests the 401(k) with company matching is a strong element, and certain groups have noncontributory defined‑benefit pensions. This combination signals solid retirement support.
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Strong & Reliable Incentives — Feedback suggests incentive programs include quarterly or annual bonuses that supplement base pay. These recurring programs indicate reliable variable compensation opportunities.
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Leave & Time Off Breadth — Paid vacation, sick pay, and nine paid holidays are promoted alongside caregiver support programs. This breadth covers common time‑off needs.
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What We Do
Westlake Chemical (NYSE: WLK) is a quality manufacturer and dependable global supplier of petrochemicals, plastics and building products. Our mission is to serve our clients by enhancing daily life through the products and services we provide, which in turn make life better for people every day. Employing approximately 9,500 people, Westlake operates from 36 locations in North America, 11 in Europe and 6 in Asia.
