Warehouse Supervisor - Reagents & Bulk Materials

MP Materials Corp. • Mountain Pass, CA

1d • $90,000 - $110,000 • Onsite

About The Position

The Warehouse Supervisor – Reagents & Bulk Materials provides end-to-end operational ownership of reagent and bulk material flow at the Mountain Pass facility. This role is responsible for driving strict safety compliance, inventory traceability, material availability, and process discipline. Based physically within one of the reagent warehouses, this supervisor oversees a dedicated team of operators ensuring operational efficiency and full alignment with company policy. The supervisor establishes clear operational ownership to support scalable, incident-free 24/7 warehouse operations.

Requirements

• Bachelor’s degree in business, logistics, supply chain, or related field. Or 5 years of progressive experience in warehouse operations in an industrial environment.
• Proven ability to lead teams, manage shift schedules, assess individual capabilities, and enforce strict team discipline and execution.
• Minimum 3 years of experience supervising/managing warehouse operations.
• Strong experience with ERP and MRP systems. SAP is a plus.
• Direct experience operating in a mining, refining, chemical processing, or construction environment preferred.
• Solid working knowledge of industrial environmental health and safety standards, safety data sheet (SDS) compliance, and OSHA/DOT guidelines applying to hazardous materials handling and storage.
• Advanced computer skills including Microsoft Office.
• Ability to operate forklifts and obtain required operating certifications if needed.

Nice To Haves

• SAP is a plus.

Responsibilities

• Deliver accurate SAP / ERP system transactions to maintain inventory integrity.
• Enforce a same-day receiving standard to eliminate material backlogs and ensure processing occurs within defined timeframes.
• Maintain full alignment with Sarbanes-Oxley (SOX) compliance, safety mandates, and environmental expectations to deliver incident-free operation.
• Perform precise validation checks comparing Purchase Orders (PO) vs. Bills of Lading (BOL) vs. physical material.
• Coordinate and communicate with Accounts Payable (AP) to ensure tight Goods Receipt (GR) vs. invoice validation.
• Ensure all inbound materials are labeled immediately upon receipt with the PO number, material number, quantity, and date.
• Partner with operations for daily reagent deliveries on kanban system and accurate allocation of consumed materials.
• Support site inventory control activities, including cycle counts, variance investigations, and authorized stock adjustments.
• Ensure all material or paperwork discrepancies are identified immediately at the point of receipt.
• Serve as the subject matter expert for reagent and bulk materials management activities and requirements, and other duties as assigned.
• Lead daily receiving activities and monitor workloads ensure the success of the crew.
• Act as a supportive and inspirational leader who can work independently with a high sense of urgency in a hands-on, active industrial team environment.

Benefits

• Consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected by law.
• Reasonable accommodation for candidates whose disabilities make them unable to meet the position’s requirements.
• Compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment verification document form upon hire.
• Employees are responsible for following all company, industry and regulatory procedures and laws to ensure a safe work environment for themselves and the company.
• Willingness to promote safety among the workforce, participate in Process Hazard Analysis procedures and Pre-Startup Safety Reviews.
• Personal Protective Equipment (PPE) is required when performing work in a mine, manufacturing, outdoor, or plant environment.

What This Job Offers

• Job Type: Full-time
• Career Level: Manager