Materials Management Supervisor

Why Castelion, Why Now

Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus, ownership, and excellence are decisive advantages - and we're building a world-class team to turn bold ideas into real capability.

This is a rare opportunity to join at an early stage, where you'll have significant ownership, collaborate with exceptional teammates, and make a direct, measurable impact on our mission and the future of the company - regardless of your function.

As a Materials Management Supervisor, you will lead Castelion's Materials Management organization, encompassing Inventory, Shipping, and Receiving, and own day-to-day execution across these functions. Your team will be responsible for receiving, inventory control, shipping, staging, kitting, production inventory transfers, and the timely movement of material across the company.

This is a people-leadership role that requires strong operational judgment. You will set priorities and expectations, develop your team, drive accountability, and build scalable processes while remaining close enough to the operation to remove roadblocks and respond to critical production needs.

The right person brings proven leadership experience, strong manufacturing and inventory-management fundamentals, and the ability to build structure in a fast-paced environment where priorities and processes continue to evolve.

• Lead, coach, and develop the Materials Management team across Inventory, Shipping, and Receiving, establishing clear expectations for safety, quality, urgency, inventory accuracy, customer service, and execution.
• Own daily Materials Management operations across receiving, inventory control, shipping, putaway, material movement, staging, kitting, replenishment, and production support.
• Set team priorities and performance goals, allocate resources, provide feedback, address performance gaps, and identify staffing and development needs as the organization scales.
• Own the timely and accurate movement of material across Castelion, including inbound receipts, production inventory transfers, intersite transfers, and outbound shipments.
• Develop and maintain standard work, operating procedures, and scalable processes across Materials Management.
• Establish and monitor KPIs for inventory accuracy, receiving and shipping performance, material availability, transaction accuracy, cycle counts, and transfer execution.
• Maintain accurate physical and systematic inventory and ensure material movements are promptly reflected in Castelion's ERP/MES systems.
• Own cycle counting, inventory reconciliation, discrepancy investigation, root-cause analysis, and corrective actions.
• Ensure disciplined inventory-control and traceability practices, including location control, FIFO, lot, serial, and shelf-life requirements.
• Own shipping and receiving execution, including prioritization, packaging, documentation, carrier coordination, inbound processing, tracking, and on-time performance.
• Partner with Production and Manufacturing Engineering to ensure material is staged, transferred, and available in alignment with production priorities.
• Collaborate with Supply Chain, Planning, Quality, Engineering, and Production to resolve shortages, discrepancies, nonconforming material, transportation constraints, and other material risks.
• Identify and eliminate bottlenecks across receiving, storage, picking, staging, kitting, shipping, and material movement.
• Develop warehouse layouts, storage strategies, point-of-use inventory, replenishment methods, and material-flow processes that support increasing production rates.
• Drive continuous improvement of ERP, MES, WMS,…