Lead Tool & Die Machinist

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Full Time MAG - MP Magnetics LLC, Fort Worth, TX, US

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.

The Lead Tool & Die Machinist is responsible for leading the maintenance, repair, fabrication, and continuous improvement of tooling, dies, fixtures, and manufacturing equipment to support production operations. This position requires extensive experience with manual and CNC machining equipment, strong troubleshooting abilities, and leadership skills to coordinate work activities and mentor other technicians. The ideal candidate will possess a high level of craftsmanship, a strong safety mindset, and the ability to work independently while driving improvements in equipment reliability, quality, and production efficiency.

• Lead daily activities of the Tool & Die team and coordinate priorities with production and maintenance leadership.
• Troubleshoot, repair, and maintain stamping dies, fixtures, jigs, molds, and precision tooling.
• Operate and maintain:
  • Manual lathes
  • Manual milling machines
  • CNC mills and lathes
  • Wire EDM
  • Surface grinders
  • Drill presses
  • Horizontal/ Vertical Band saws
  • Precision measuring equipment
• Fabricate replacement parts and components from engineering drawings, sketches, or worn samples.
• Perform precision fitting, alignment, and assembly of tooling components.
• Conduct root cause analysis on recurring tooling failures and implement corrective actions.
• Support preventive and predictive maintenance programs for tooling and manufacturing equipment.
• Assist engineering with new product development, tooling modifications, and process improvements.
• Train, mentor, and develop junior Tool & Die Technicians and machinists.
• Ensure all work is performed in compliance with company safety policies and LOTO procedures.
• Maintain accurate maintenance records, work orders, and tooling documentation.
• Recommend improvements to increase reliability, reduce downtime, and improve product quality.
• Repair, troubleshoot, modify, and rebuild stamping dies, molds, fixtures, jigs, and precision tooling to maintain safe and reliable production operations.
• Provide urgent production support by responding to tooling failures, diagnosing root causes, and implementing permanent corrective actions to improve equipment uptime and reliability.
• Reverse engineer worn or unavailable components from samples, drawings, or existing parts to restore equipment functionality and maintain operational continuity.
• Partner with Production, Engineering, and Maintenance teams to prioritize tooling repairs and improvements that maximize equipment availability, throughput, and overall plant performance.

• High school diploma or GED required.
• Journeyman Tool & Die Maker certification or equivalent experience preferred.
• Minimum of 10+ years of Tool & Die or precision machining experience.
• Minimum of 2+ years in a leadership or lead technician role preferred.
• Strong experience operating:
  • Manual lathes
  • Manual mills
  • CNC machining centers
  • Surface grinders
• Ability to read and interpret blueprints, mechanical…