Senior Director, Assistant Corporate Controller

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

Reporting to the VP, Corporate Controller, the Senior Director, Assistant Corporate Controller, will be responsible for the general oversight of the accounting functions of the Company. This role focuses on the Company’s accounting and control environment related to the General Ledger, Corporate Accounting, Inventory/Cost Accounting, Leases, Revenue, Fixed Assets, and Accounts Receivable functions. It includes tactical execution of the team’s monthly, quarterly, and year-end close responsibilities, collaborating with payroll and accounts payable functions. The position works directly with the VP, Corporate Controller to develop and implement policies and procedures, train the accounting team, and execute various accounting projects and initiatives. This role plays a critical part in ensuring the integrity, accuracy, and timeliness of consolidated financial information for global operations.

Responsibilities

• Lead the monthly, quarterly, and year-end accounting close processes and coordinate team members to meet defined close timelines.
• Oversee general ledger, corporate accounting, inventory/costing, leases, revenue, fixed assets, and accounts receivable, collaborating with payroll and accounts payable functions to support close and reporting processes.
• Champion continuous review and modification of close processes and accounting procedures to enhance efficiency, accuracy, completeness, and timeliness of deliverables.
• Manage and mentor a team of accounting professionals, providing guidance, training, and development opportunities.
• Support the establishment of department goals, objectives, and performance metrics aligned with company strategy.
• Identify, assess, and mitigate risks that could lead to accounting error or loss of operational effectiveness.
• Ensure the completeness and accuracy of consolidated financial information, including appropriate intercompany eliminations and compliance with U.S. GAAP.
• Evaluate and implement new accounting systems and technologies to enhance efficiency and accuracy.
• Continuously improve processes related to order-to-cash, revenue recognition, inventory management, fixed assets, and procure-to-pay.
• Collaborate with internal and external auditors to facilitate the audit process, ensure timely resolution of audit findings, and support an efficient audit.
• Build and maintain cross-functional relationships with colleagues across Accounting and Finance, Supply Chain, Operational Departments, Legal, and others.
• Work closely with the VP, Corporate Controller, Chief Accounting Officer, and other senior leaders to support strategic initiatives and provide financial insights and analysis.
• Ensure adherence to applicable federal, state, and local regulations.
• Assist with acquisition accounting and support the integration of newly acquired subsidiaries.
• Recommend and ensure maintenance of appropriate internal controls and financial procedures in compliance with SOX.
• Ensure timely and accurate completion of Company reconciliations, filings, and reporting requirements.
• Plan, direct, and execute various accounting projects, including those supporting Company growth initiatives.
• Perform other duties as assigned.

Requirements

• Bachelor’s degree in Accounting, Finance, or a related field.
• Active CPA license is required.
• Expert understanding of U.S. GAAP and maintaining a strong internal control SOX environment; solid understanding of SEC external financial reporting.
• Minimum of 12 years of progressive experience in accounting, with at least 5 years in a leadership role within a public company and at least 3 years with a Big 4 accounting firm.
• Exceptional analytical, problem-solving, and decision-making skills.
• Highly driven and self-motivated, with strong leadership, presentation, and communication skills.
• Experience coordinating with external auditors.
• Ability to coordinate projects from inception to completion, incorporating feedback from multiple sources and stakeholders.
• Ability to multi-task, prioritize competing projects, and manage requests/assignments in a timely manner.
• Experience with ERP systems (preferably SAP S/4HANA) and financial reporting tools (e.g., OneStream, Hyperion).
• High proficiency in Microsoft Office Suite.

Desired Qualities

• Ability to adapt to a fast-paced and dynamic work environment.
• Proactive and results-driven, with a continuous improvement mindset.
• Excellent leadership, people management, communication, and influencing skills.
• Experience in training, developing, and mentoring staff.
• Ability to work in a team environment, communicate articulately and confidently across organizational levels, and build rapport with stakeholders.
• Ability to analyze complex problems, interpret operational needs, and implement solutions.
• Strong interest in staying informed of new and emerging accounting standards.
• Proven ability to drive for results and accountability of business needs.
• Demonstrates decisiveness in resolving business problems, making decisions, and identifying priorities.
• Experience in the manufacturing industry preferred.
• Experience with international accounting preferred.