Senior Human Resources Generalist (ONSITE) at MP Materials Corp

Mountain Pass, California, United States -

Full Time

Start Date

Immediate

Expiry Date

14 Jul, 26

Salary

125000.0

Posted On

16 Apr, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Human Resources, Employee Relations, Talent Acquisition, Performance Management, Workforce Planning, Compliance, HRIS, ADP, Recruiting, Employee Engagement, Conflict Resolution, Strategic Planning, Data Analysis, Project Management, Employment Law, Coaching

Industry

Manufacturing

Description

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 Senior Generalist, Human Resources serves as a key HR Partner supporting the Mountain Pass, CA operations. This role provides strategic and operational HR support across the full employee lifecycle including talent acquisition, employee relations, performance management, workforce planning, compliance, and HR program implementation. The Senior Generalist, Human Resources partners closely with business leaders to drive HR initiatives that support operational goals, enhance employee engagement, and ensure compliance with corporate policies, federal, state and local regulations, and SOX requirements. This role serves as a trusted advisor to employees, helping drive HR programs that align with business objectives, enhance performance and mitigate organizational risk. Position Responsibilities: * Support the various HR areas with ad hoc projects and tasks, including operations, compensation and benefits, talent development and training, employee engagement, and other functions. * Identify and drive continuous improvement initiatives by evaluating HR processes, systems and procedures, proposing solutions, and driving solutions to completion. * Facilitate tasks for onboarding, new-hire orientation, and exit interviews, including data entry in HRIS and audits for accuracy and compliance. * Assist in preparing HR-related metrics, reports, and documentation for management, auditors, and stakeholders. * Assist with system integration and optimization efforts for HR, including task tracking, documenting, monitoring timelines, reviewing resource needs, and driving results to completion. * Provide coaching and guidance on HR policies, procedures, and employment law. * Conduct and lead employee relations investigations, including workplace complaints, policy violations, and conflict resolution. * Provide guidance to managers on performance management, disciplinary actions, and terminations in compliance with company policies and employment laws. * Support employee engagement initiatives, including surveys, action planning, and culture programs * Provide guidance on goal setting, employee development, and career progression. * Manage full-cycle recruiting including strategic planning with the hiring teams, sourcing candidates, interviewing, screening, coordinating the selection and offer letter process, and supporting hiring requirements. * Partner with business leaders to understand operations to define candidate talent requirements and sourcing approach. * Partner with HR cross-functional teams with creating job descriptions, preparing offers, handling internal mobility, and other activities within the recruiting cycle. * Develop optimal processes to maintain accurate and up-to-date records of candidate information in the applicant tracking system. * Other duties as assigned. Basic Qualifications: * Minimum 5 years of Human Resources with at least 3 years in a Senior Generalist/Business Partner role preferably in a public company or regulated environment. * Bachelor’s degree in Human Resources or relevant field of study. * Proficiency using ADP and/or other HR systems and technology. * Demonstrated ability to effectively partner with HR cross functional teams, business operations, and other stakeholders within the business. * Demonstrated ability to interpret information, make suggestions, and drive change. * Excellent written and verbal communication skills. * Demonstrated time management skills, and ability to retain responsiveness in a vibrant, multi-task environment. Desired Qualities: * Experience and/or strong knowledge of overall Recruiting/HR practices, such as compensation, benefits, talent management, DEI, and HR operations. * Experience working directly with/for senior leadership positions. * Proactive and solution-oriented mindset. * Ability to balance strategic thinking and hands-on execution. * Experience developing and/or maintaining relationships with external organizations. * General project management skills and/or experience launching initiatives and programs. * Strong proficiency in Microsoft Office suite, including but not limited to Excel, HRIS, and HR reporting tools. * Ability to maintain strict confidentiality and exercise sound judgment. 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.

Responsibilities

The Senior HR Generalist provides strategic and operational support across the full employee lifecycle, including talent acquisition, employee relations, and performance management. They partner with business leaders to drive HR initiatives, ensure regulatory compliance, and improve organizational processes.