Mechanical Supervisor

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.

MP Materials is seeking a highly capable Industrial Mechanical Supervisor to lead mechanical maintenance, machining, and fabrication activities supporting advanced magnet manufacturing. This working supervisor role oversees Industrial Mechanics, Fabricators/Welders, and Tool & Die Machinists, ensuring safe, reliable, and high-quality execution of all mechanical work in a 24/7 production environment.

The ideal candidate brings strong technical depth in rotating equipment, hydraulics/pneumatics, fabrication, and precision machining paired with leadership experience in setting standards, building technician capability, and driving preventive maintenance (PM) program development. This leader will play a key role in improving equipment uptime, mechanical reliability, and craftsmanship across the facility.

• Lead mechanical maintenance activities, including troubleshooting, equipment repairs, fabrication, machining, and rebuilds.
• Establish technical standards and workmanship expectations for mechanical, fabrication, and machining job types.
• Develop, implement, and improve PM programs for rotating equipment, hydraulic/pneumatic systems, fabrication tools, and mechanical assets.
• Oversee alignment procedures, bearing fits, lubrication practices, welding quality, machining tolerances, and piping/fabrication accuracy.
• Ensure accurate and detailed SAP documentation including PM updates, corrective work, labor confirmations, and parts usage.
• Collaborate with Engineering, Operations, Reliability, and Projects to address chronic mechanical issues and support equipment installations.
• Support rigging, alignment, commissioning, and mechanical integration for new equipment.
• Participate in RCAs and reliability improvement initiatives.
• Maintain strict adherence to LOTO, hot work, rigging safety, confined space, and machine guarding requirements.
• Coach, mentor, and build technical talent across mechanics, welders, and machinists.

• 7+ years of industrial mechanical experience (rotating equipment, machining, welding, fabrication, or hydraulics/pneumatics).
• 2+ years leadership or senior-level mechanical maintenance experience.
• Strong mechanical troubleshooting capability across production and facility systems.
• Ability to interpret mechanical drawings, fabrication prints, piping isometrics.
• CMMS experience (SAP preferred).
• Strong communication and cross-functional collaboration skills.

• Safety-driven craftsmanship.
• Hands-on leadership style.
• High mechanical aptitude.
• Strong communicator and collaborator.
• Commitment to continuous improvement.
• Detail-oriented and technically disciplined.

MP Materials is Proud to be an Equal Opportunity / Affirmative Action Employer - EEO is The Law. 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 ; 1700 South Pavilion Center Dr. 8th Floor, Las Vegas, NV 89135 to discuss reasonable accommodation.