Senior Engineer, Magnet Technology

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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.

MP Materials is seeking a hands‑on Senior Engineer to join the Magnet Technology group to support development technologies for advanced manufacturing to produce high‑performance rare earth permanent magnets. The Senior Engineer will specialize in hands‑on experimental development efforts related to front‑end magnet‑making processes, including but not limited to strip casting, powder processing, pressing, and sintering.

• Lead experimental projects, overseeing project planning, execution, and delivery of scalable new materials and processes for rare‑earth permanent magnets.
• Design and conduct experiments to optimize new materials and processes for rare‑earth permanent magnets.
• Leverage materials characterization techniques including SEM, XRD, particle size analysis, etc. to suggest actionable process improvements.
• Collaborate with production teams to scale processes from pilot to manufacturing operations.
• 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 the generation of technical reports and SOPs, document and communicate findings, and build team knowledge of current and future magnet prototyping.
• Work closely with EHS to ensure that all work is done to world‑class health and safety, and full compliance with relevant environmental regulations.
• Other duties as assigned.

• Master’s or Ph.D. in Materials Science & Engineering, Metallurgy, Mechanical Engineering, or related field.
• 5+ years of experience in manufacturing or R&D demonstrating successful process development across metals, ceramics or related systems.
• Strong knowledge and experience with process development in areas such as casting, powder metallurgy, pressing, or sintering.
• Proficiency in materials characterization techniques such as XRD, SEM, and particle size analysis.
• Demonstrated ability to design and execute experiments, analyze data, and draw actionable conclusions.
• Excellent written and verbal communication skills.

• Experience with manufacturing of rare earth materials and permanent magnets.
• Strong troubleshooting skills with manufacturing equipment and process control.
• Experience leading technical development projects, with the ability to prioritize and manage multiple concurrent projects.
• Strong skills in analyzing experimental data using tools such as Python, MATLAB, or statistical software to draw actionable insights and guide decision‑making.
• Lifelong learner able and enthusiastic to apply existing skills and experiences to new problems.

MP Materials is proud to be an Equal Opportunity / Affiantive 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.