Manufacturing Facilities Engineering

Company Overview:

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.

MP Materials is seeking hands‑on Manufacturing Facilities Engineering to be an integral part of the team designing and building a new metal, alloy, and magnet‑making facility. This is a rare opportunity to have a central role in the development of a greenfield advanced manufacturing facility and helping to define the future of American manufacturing. This position will require a combination of both strong technical skills to design the machines needed for material movement and plant layout, and a hands‑on nature to ensure that the successful sourcing, construction, and commissioning of the designs.

The new facility contains a broad range of chemical, mechanical, and thermal processes, including electrowinning, strip casting, powder production, pressing & sintering, machining, and assembly. Because of the broad range of processes in use, it is important that the Manufacturing Facilities Engineering have a diverse technical background with the ability to engage with a broad range of technical specialists and gain a working understanding of the physical processes, key control metrics, and potential hazards involved.

The successful candidate will be passionate about pairing design work with much of the actual “dirty hands” work to ensure that everything works as intended initially and over time.

• Primarily responsible for facility engineering related to building, piping, HVAC, process gas distribution and related activities.
• Contribute to a dedicated team of engineers and specialists for support of existing manufacturing sites.
• Review designs for new facilities as MP expands manufacturing.
• Contributes to the Physical Design Engineering team as an integral member.
• Works closely with broader process engineering, controls engineering, and manufacturing teams to create support and utility systems for equipment expansions.
• Works with engineering teams and maintenance to manage operational and capital projects utilizing local contractors and third‑party engineering firms where applicable
• Delivers finished designs, detailed drawings, and engineering specifications for supplier bidding, and leads vendor compliance efforts after purchase
• Conducts and participates in technical design reviews, supplier evaluations and internal and external compliance audits relevant to industrial standards (ASTM, ISO etc.)
• Works closely with EHS to ensure that all work is done to ensure world class health and safety, and full compliance with relevant environmental regulations.
• Documents all work for seamless handoff to end users, prepares technical reports, and follows all corporate change management procedures.
• Leads and supports continuous improvement activities to produce ongoing, meaningful improvements to worker safety, process up time, and product quality
• Other duties as assigned.

• Prior experience as an engineer within a manufacturing environment
• BS or MS in mechanical engineering, chemical engineering, or related field
• At least 3 years’ manufacturing equipment and utility design experience within a manufacturing environment
• Knowledge of statistical process control, and…