Materials Planner I: Demand, Purchasing & Inventory

Polytek Development Corp; Kalamazoo (MI); On-site; USD 55,000 - 75,000; Full time

Job summary

Polytek Development Corp. is seeking a Materials Planner I to manage raw material planning, procurement, and inventory to support production schedules.

You will coordinate site purchasing requirements and collaborate with cross-functional teams to ensure materials are available to meet customer demand and operational goals. The role requires 3–5 years in materials planning or purchasing within manufacturing, strong Excel skills, and proficiency with MRP/ERP systems.

Qualifications

• English proficiency required (read/speak/write)
• Degree in supply chain, operations, or related field preferred; equivalent experience considered
• 3–5 years in materials planning, scheduling, purchasing, or inventory in manufacturing
• Knowledge of MRP/ERP, inventory concepts, and production scheduling
• Experience with purchase orders, supplier communications, and replenishment activities
• Ability to analyze inventory, demand, and supply data for decisions
• Proficient in Microsoft Excel and related tools
• Able to prioritize multiple tasks in a fast-paced environment
• Strong organizational, analytical, and communication skills
• APICS/ASCM certification or coursework is a plus

Responsibilities

• Plan, order, and track raw materials for manufacturing operations
• Use ERP/MRP to plan material requirements and monitor inventory
• Create and maintain purchase orders for materials, packaging, and services
• Coordinate with suppliers on order acknowledgments and delivery status
• Expedite open purchase orders to prevent shortages
• Collaborate with production, quality, and customer service teams to align materials with demand
• Maintain BOMs, item master data, lead times, and planning parameters
• Manage inventory controls, cycles counts, and discrepancy investigations
• Generate reports on inventory, shortages, supplier deliveries, PO status, and production scheduling
• Support scheduling by adjusting manufacturing plans based on material availability
• Contribute to continuous improvement in inventory management and procurement processes
• Perform other duties as assigned

Skills

MRP/ERP planning

Production scheduling

Procurement & purchasing

Inventory management

Supplier management

ERP systems

Forecasting & demand planning

Inventory accuracy

Continuous improvement

Cross-functional collaboration

Analytical problem solving

Education

Associate or Bachelor’s in Supply Chain/Business/Operations

Tools

ERP/MRP systems

Excel

Job description

Polytek Development Corp. is seeking a Materials Planner I to manage raw material planning, procurement, and inventory to support production schedules.

You will coordinate site purchasing requirements and collaborate with cross-functional teams to ensure materials are available to meet customer demand and operational goals. The role requires 3–5 years in materials planning or purchasing within manufacturing, strong Excel skills, and proficiency with MRP/ERP systems.