Warehouse Supervisor - Receiving

MP Materials; Mountain Pass (CA); On-site; USD 60,000 - 80,000; Full time

Job summary

MP Materials, located in Mountain Pass, California, is seeking a Warehouse Supervisor – Receiving to manage receiving operations and ensure materials are processed accurately and on time. The ideal candidate will have warehouse management experience and the ability to lead teams effectively.

This role involves supervising receiving activities, enforcing compliance with safety standards, and maintaining inventory accuracy using SAP/ERP systems. Join MP Materials to contribute to American industrial capability in a hands-on, dynamic environment.

Qualifications

• Strong experience operating in an industrial environment.
• Minimum 3 years of warehouse supervisory experience.
• Ability to lead teams and manage shift schedules.

Responsibilities

• Ensure compliance with receiving operations.
• Supervise crew and maintain process discipline.
• Lead daily receiving activities.

Skills

Leadership

SAP and ERP systems

Inventory management

Safety compliance

Microsoft Office

Education

Bachelor’s degree in business, logistics, supply chain, or related field

5 years of progressive experience in warehouse operations

Tools

Forklifts

Job description

Company Overview: MP Materials (NYSE: MP) is rebuilding American industrial capability for a new era of autonomy, robotics, and electrification. We are the only U.S. company with a fully integrated rare earth supply chain—from mining and refining to advanced metal and magnet manufacturing. Our products include both the critical materials used to make permanent magnets and the finished magnets themselves—enabling next‑generation technologies in robotics, automation, aerospace, transportation, defense, and energy systems. These materials are the foundation of physical AI—the convergence of computation, movement, and control.

Position Overview

The Warehouse Supervisor – Receiving is responsible for full ownership of receiving operations at Mountain Pass, ensuring materials are received accurately, on time, and in compliance with company standards. Reporting into the Supply Chain structure, this role supervises crews to maintain strict process discipline, drive inventory accuracy, and eliminate ambiguity in receiving activities. The supervisor establishes clear operational ownership to support scalable, incident‑free 24/7 warehouse operations.

Position 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 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.
• Execute and verify team shift readiness, focusing on required PPE usage and punctuality.
• Support site inventory control activities, including cycle counts, variance investigations, and authorized stock adjustments; identify all material or paperwork discrepancies immediately at the point of receipt.
• Enforce comprehensive documentation of variances using photos, detailed BOL notes, and system flags; maintain a discrepancy tracking log from initial detection to final closure, coordinating resolutions with Procurement.
• Support incoming delivery schedule to optimize material flow and layout systems.
• Escalate and manage damaged or compromised materials alongside spills or environmental incidents; execute mandatory weekly area walkthroughs with documented photo evidence and ensure full compliance with housekeeping checklists and standardized scorecards.
• Serve as subject matter expert for warehouse activities and requirements; perform other duties as assigned.
• Lead daily receiving activities and monitor workloads to ensure crew success.
• Act as a supportive and inspirational leader who can work independently with a high sense of urgency in a hands‑on, active industrial yard team environment.

Required Experience

• 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.

Equal Opportunity / Anti‑Discrimination Statement

MP Materials is proud to be an Equal Opportunity / affirmative action employer. All qualified applicants will receive 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. Under‑represented groups, women, disabled individuals, veterans are encouraged to apply. Candidates whose disabilities make them unable to meet the position’s requirements will still be considered qualified if they can perform the essential functions of the job with reasonable accommodation.

Your Right to Work

In 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.

Safety Provision

Employees are responsible for following all company, industry, and regulatory procedures and laws to ensure a safe work environment for themselves and the company. Employees must 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. Required PPE may include, but is not limited to, hard hat, hearing protection, safety glasses, safety footwear, respirator, rubber steel‑toe boots, protective clothing, gloves, and any other protective equipment as required.

Working Conditions

The facility sits at an elevation of 4,700 feet. Employees may be subject to extreme weather conditions when working in an outdoor setting (heat, cold, wind). Work is at an open‑pit mine or manufacturing/chemical plant setting, which may include exposure to moving mechanical parts, toxic chemicals, risk of electrical shock, explosives, fumes, or airborne particles.

Physical Demands

Manual dexterity; sense of touch; sense of smell; speaking clearly; hearing; seeing, reading, and comprehension; vision for close and distant tasks; color vision. Tasks include standing, walking, reaching, climbing, stooping, kneeling, crouching, and crawling. Employees must pass a full‑face respiratory fit test, lift 50 lbs, and work in PPE level C. These requirements are representative, but not all‑inclusive, of the knowledge, skill, and ability required of the employee.