4.1. Senior Production Engineer

Phoenix Tailings • Exeter, NH

13d • Onsite

About The Position

Phoenix Tailings is a rapidly-growing clean mining and metals production startup dedicated to sustainable and economic critical metals production. Our mission is to be the world's first fully clean mining and metals production company, producing the resources needed for the next generation of our economy. Phoenix Tailings is looking for a hands-on, experienced, and mission-driven Senior Production Engineer to help launch and scale our first 24/7 commercial clean metals production facility in Exeter, NH. You'll help to scale our next-generation systems rare earth metal refining processes and enabling safe, consistent, and high-performance operation. You’ll work directly on the floor with operators, engineers, and plant leadership to turn breakthrough innovation into industrial reality — producing the rare earth and critical metals that power the modern world.

Requirements

• B.S. or M.S. in Mechanical Engineering, Chemical Engineering, Materials Science, or related field
• 4–7 years of experience in production, process, or manufacturing engineering — ideally in heavy industry or chemical processing
• Proven ability to lead hands-on process troubleshooting, improvement initiatives, and equipment optimization
• Strong mechanical aptitude with experience operating and improving industrial-scale systems
• Proficient in analyzing production data and translating insights into actionable improvements
• Comfortable working on a 24/7 production floor environment and supporting rotating shift teams as needed
• Able to work independently in fast-paced, ambiguous situations with a strong sense of ownership

Responsibilities

• Operate and optimize next-generation metal production systems to achieve throughput, yield, and quality targets
• Drive root-cause investigations and corrective actions for process deviations or equipment issues
• Lead data-driven improvement efforts to reduce downtime, increase throughput, and ensure process reliability
• Scale pilot metal recovery processes into full commercial production lines with minimal disruption
• Develop and refine SOPs, process documentation, and training materials to enable safe and repeatable operations
• Support process commissioning and startup for new systems and upgrades in Exeter
• Mentor operators and junior engineers, building operational excellence and a strong safety culture
• Serve as the technical point of contact for day-to-day production issues and escalations
• Partner with R&D, materials, and chemical engineering teams to integrate upstream and downstream processes
• Champion a culture of continuous improvement, safety, and accountability across the facility

Benefits

• 100% Medical, dental, and vision coverage for employee
• Ownership in a fast-growing venture-backed company.
• Unlimited PTO.
• Learning and development opportunities to grow your skills and career.
• Working with fun, hard-working, kind people committed to making a difference!

What This Job Offers

• Job Type: Full-time
• Career Level: Senior