Custodian

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.

We hire ambitious, mission-driven people who want to tackle complex challenges and shape the future of strategic industries. Our culture is rooted in teamwork, resiliency, and integrity, with a deep commitment to operational excellence and national purpose. MP is rapidly evolving from a materials producer into a leading U.S. manufacturer—and our people are driving that transformation.

Position Overview:

The Custodian plays an essential role in maintaining a clean, safe, and orderly environment across our mining and processing operation. Reporting directly to the Facilities Supervisor, this position is responsible for routine cleaning, sanitation, and minor upkeep of site buildings and facilities. The Custodian supports daily operations by ensuring workspaces, common areas, and critical infrastructure remain presentable and hazard-free for all employees and visitors.

The Custodian collaboratively with a variety of departments across the site to support a safe, reliable, and efficient working environment at our mining and processing operation in Mountain Pass, California.

Position Responsibilities:

• Perform daily cleaning tasks including sweeping, mopping, dusting, and waste removal across offices, restrooms, breakrooms, and common areas.
• Restock supplies such as paper products, soap, and sanitizers in all facility restrooms and kitchens.
• Conduct scheduled deep-cleaning of floors, windows, and other surfaces using industrial cleaning equipment.
• Support site cleanliness through exterior maintenance such as floor sweep pickup, walkway clearing, and light groundskeeping.
• Identify and report maintenance issues such as leaks, broken fixtures, or unsafe conditions to the Facilities team for resolution.
• Assist with basic facility upkeep such as replacing light bulbs, minor touch-up painting, or assembling furniture when needed.
• Safely handle and store cleaning chemicals in accordance with site safety policies and SDS requirements.
• Ensure proper documentation of daily cleaning logs, supply usage, and any notable findings or incidents.
• Respond to spills or cleaning emergencies promptly to minimize disruptions and ensure safety.
• Support site events or visitor tours by helping prepare and clean designated areas.

Basic Qualifications:

• High school diploma or GED required
• Minimum 1 year of experience in custodial, janitorial, or similar cleaning role
• Ability to safely operate cleaning equipment such as vacuums, floor scrubbers, and pressure washers
• Basic understanding of sanitation standards and cleaning procedures
• Comfortable working indoors and outdoors in an industrial environment

Desired Qualities:

• Strong work ethic and commitment to reliability and punctuality
• Positive, team-oriented attitude with a willingness to assist wherever needed
• Strong attention to detail and a proactive approach to identifying and resolving issues
• Good communication skills and ability to interact professionally across departments
• Ability to prioritize tasks and manage time effectively in a fast-paced environment
• Flexible and adaptable to changing priorities or emergency repairs
• Self-motivated and able to work independently with minimal supervision
• Commitment to safety, quality, and continuous improvement
• Desire to learn and grow within a dynamic industrial setting
• Sense of ownership and pride in maintaining a safe, clean, and efficient facility

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. Underrepresented groups/Women/Disabled/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.

For Assistance with Application - Alternative methods of applying for employment are available to individuals unable to submit an application through this site because of a disability. Contact Human Resources Department at ...; dial 7 when prompted for HR;1700 South Pavilion Center Dr. 8th Floor, Las Vegas, NV 89135 to discuss reasonable accommodation.

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 have a willingness to promote safety among the workforce, participate in Process Hazard Analysis procedures and Pre-Startup Safety Reviews.

(PPE) Personal Protective Equipment 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 - Our facility sits at an elevation of 4,700 feet. Employees may be subject to extreme weather conditions when working in an outdoor setting (heat and 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-speech range; hearing – all ranges; seeing, reading and comprehensions; seeing – distant/near; depth perception; color vision. While performing the job responsibilities, the employee is required to talk and hear. The employee is often required to stand and use their hands and fingers, to handle or feel and to manipulate laboratory equipment. The employee is occasionally required to walk, reach with arms and hands, climb or balance, and to stoop, kneel, crouch or crawl. Vision abilities required by this job include close vision. Employees must pass a full-face respiratory fit test. Employees must be able to lift 50 lbs. Must be able to work in PPE level C. These requirements are representative, but not all-inclusive, of the knowledge, skill, and ability required of the employee.