Human Resources Manager

About the Company

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.

About the Role

The Manager of Human Resources plays a pivotal role in shaping and executing the human capital strategy to support the organization's overall business objectives. This position is responsible for overseeing numerous HR functions, including talent acquisition, employee relations, performance management, and compliance with labor laws across all sites. The Manager will collaborate closely with senior leadership to align HR initiatives with organizational goals and drive continuous improvement in workforce effectiveness. This role ensures that the company attracts, develops, and retains top talent while maintaining a compliant and supportive workplace culture.

Responsibilities

• Lead and manage the full spectrum of human resources activities including recruitment, onboarding, training, performance evaluation, and employee development.
• Develop, implement, and update HR policies and procedures to ensure compliance with federal, state, and local employment laws and regulations.
• Serve as a trusted advisor to management and employees on HR-related matters, including conflict resolution, disciplinary actions, and workforce planning.
• Drive employee engagement initiatives and diversity, equity, and inclusion programs to cultivate a positive and inclusive workplace culture.
• Analyze HR metrics and prepare reports to inform leadership decisions and identify opportunities for organizational improvement.
• Oversee employee relations and ensure timely and effective resolution of workplace issues and grievances.
• Coordinate with external vendors and legal counsel as necessary to support HR operations and compliance.

Requirements

• Bachelor’s degree in Human Resources, Business Administration, or a related field.
• At least 5 years of progressive experience in human resources management or a similar role.
• Strong knowledge of U.S. labor laws and HR best practices.
• Excellent communication and interpersonal skills with the ability to build relationships at all organizational levels.
• Experience managing employee relations, recruitment, and performance management processes.
• Experience with HRIS systems and data analytics tools, e.g., ADP.

Preferred Qualifications

• Master’s degree in Human Resources Management, Organizational Development, or related discipline.
• Professional HR certification such as SHRM-CP or PHR/SPHR.
• Experience working in a multi-state environment with diverse workforce populations.
• Demonstrated success in leading diversity, equity, and inclusion initiatives.

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 comprehension; 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.