Manager, Financial Systems

MP Materials is seeking a dynamic and technically skilled Senior Manager, Financial Systems to lead the strategic development, optimization, and administration of our financial systems landscape, including, but not limited to, SAP S/4HANA, OneStream, and BlackLine. This role is critical to scaling our financial operations as we expand manufacturing capabilities and global operations.

Reporting to the Senior Director, Finance Transformation & Systems, the Senior Manager will serve as the bridge between Finance and IT-owning key systems, managing financial data flows, and driving process automation across accounting, reporting, planning, and analytics functions. The ideal candidate will combine deep financial acumen, system implementation experience, and a passion for solving problems with scalable, technology-driven solutions.

Position Responsibilities:

• Lead the administration, enhancement, and governance of financial systems including SAP S/4HANA, OneStream, BlackLine, and other systems and related tools.
• Act as primary liaison between Finance, IT, and external vendors to manage system changes, troubleshoot issues, and implement upgrades.
• Identify and drive automation opportunities in core finance and accounting processes.
• Lead system and process enhancements and support major projects such as ERP implementations, module expansions, and integrations across systems.
• Develop and maintain robust documentation of business processes, configuration decisions, and control procedures.
• Train finance users on systems functionality and best practices; serve as a subject matter expert on data structures and reporting logic.
• Lead master data governance across finance-related domains, establishing policies, workflows, controls, and stewardship to improve data quality and standardization.
• Support external audits, SOX compliance, and internal control testing related to financial systems.
• Monitor and enforce user access, change control, and segregation of duties across systems.

• Bachelor’s degree in Accounting, Finance, Information Systems, or related field.
• 7+ years of experience in financial systems management, financial transformation, or accounting systems administration.
• Strong hands-on experience with SAP S/4HANA (FI/CO and related modules) and OneStream (or similar CPM tools such as Hyperion, Tagetik).
• Demonstrated success leading finance system implementations, upgrades, or integrations.
• Excellent analytical, project management, and cross-functional communication skills.

Desired Qualities:

• CPA, CMA, or MBA preferred.
• Public company experience in manufacturing, energy, or industrial sectors.
• Experience implementing financial automation tools (e.g., BlackLine, Coupa, FloQast).
• Deep understanding of accounting workflows, month-end close, and consolidation/reporting requirements.
• Familiarity with data warehousing concepts, reporting cubes, and financial master data governance.
• Proactive, hands-on leader with a track record of delivering practical solutions in a fast-paced environment.

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.