Company Overview:

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:

MP Materials is seeking a hands-on Engineer to support the development of advanced manufacturing technologies for grain boundary diffusion (GBD) in high-performance rare earth permanent magnets. This role focuses on optimizing magnetic properties through interface engineering, diffusion treatments, and tailored thermal treatments. The ideal candidate will bring deep expertise in materials thermodynamics, diffusion kinetics, and physical metallurgy. This is a rare opportunity to play a key role in returning an essential manufacturing capability to the USA.

Position Responsibilities:

• Lead experimental projects, overseeing project planning, execution, and delivery of the development and optimization of GBD processes at the laboratory and pilot-scale to enhance the magnetic properties of permanent rare-earth magnets.
• Design and conduct experiments to optimize new materials and processes, including but not limited to developing and refining heat treatment profiles to support GBD and microstructural control in permanent rare-earth magnet systems.
• Characterize microstructure and diffusion behavior using advanced materials analysis techniques such as SEM-EDS, EPMA, XRD, DSC, etc.
• Apply laboratory and pilot-scale findings to assist process scale up to production.
• Mentor technicians and engineers to ensure high-quality execution of experimental trials and data collection, providing technical guidance in metallurgical materials, and fostering a culture of continuous learning and professional development.
• Lead and manage development projects, document and communicate findings, and build team knowledge of current and future magnet research.
• Work closely with EHS to ensure that all work is done to ensure world-class health and safety, and full compliance with relevant environmental regulations.
• Other duties as assigned.

Basic Qualifications:

• Master’s or Ph.D. in Materials Science & Engineering, Metallurgy, Physics, or related field.
• Hands-on experience with metallurgical or ceramic processing, heat treatments, and materials characterization methods.
• Deep understanding of materials thermodynamics and kinetics.
• Agile researcher, adept at identifying untested questions about materials and the interactions between processing, structure, and performance.
• Excellent written and verbal communication skills.

Desired Qualities:

• Experience with manufacturing rare earth materials and permanent magnets.
• Experience leading technical development projects, with the ability to prioritize and manage multiple concurrent projects.
• Experience with programming, modeling, and/or machine learning techniques and the ability to apply those skills to advance physical understanding of materials.
• Lifelong learner able and enthusiastic to apply existing skills and experiences to new problems.

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 702-844-6111; dial 7 when prompted for HR; 1700 South Pavilion Center Dr. 8th Floor, Las Vegas, NV 89135 to discuss reasonable accommodation.