7.5. Senior Mechanical Engineer

Phoenix Tailings • Burlington, MA

29d • $120,000 - $160,000

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.
At Phoenix Tailings, we believe that nothing great is ever accomplished alone or without the passion of people who push and motivate one another. If you are someone who shares our relentless pursuit of a better future, passion for innovation, and are excited about working with some of the top innovators in the world, then this is the place for you.
Phoenix Tailings is looking for a Senior Mechanical Engineer who will take a leading role in designing, building, and proving the next generation of critical metals processing systems. This role will drive the full equipment lifecycle from concept and prototyping to deployment and continuous improvement, while working hands-on with technicians and engineers on the floor. The right candidate will bring deep mechanical expertise, leadership, and a builder’s mindset to accelerate the development of the infrastructure required to produce critical metals sustainably at scale.
This pay range reflects the expected compensation for this role and may vary based on experience and qualifications.

Requirements

• 7+ years of mechanical engineering experience in industrial systems, manufacturing equipment, or process equipment development
• Strong hands-on experience designing, building, and troubleshooting mechanical systems and machinery
• Experience owning equipment through the full lifecycle including design, fabrication, testing, and operational validation
• Proficiency with CAD tools and creating detailed engineering drawings for fabrication and assembly
• Experience working directly with technicians, machinists, or fabrication teams to build and modify equipment
• Ability to translate technical challenges into structured engineering solutions and development programs
• Bachelor’s or higher degree in Mechanical Engineering or a related field

Responsibilities

• Lead the mechanical engineering lifecycle for new processing equipment, from concept and design through build, testing, and operational deployment
• Establish and maintain mechanical engineering standards for Phoenix Tailings’ processing systems and industrial equipment
• Develop and execute strategic engineering plans to design, build, test, and validate new systems and mechanical infrastructure
• Design and improve mechanical systems used in critical metals processing, focusing on reliability, maintainability, and scalability
• Serve as the hands-on engineering lead during equipment builds, commissioning, and troubleshooting on the production floor
• Translate operational challenges and team feedback into defined engineering programs and equipment improvements
• Create and review mechanical designs, drawings, and documentation to support fabrication, installation, and operation
• Guide and coach early-career engineers through practical engineering problem solving and system development

Benefits

• Healthcare, we care about you and your family: 100% Medical, dental, and vision coverage
• Stock: Ownership in a fast-growing venture-backed company.
• Family Focus: Parental leave and flexibility for families.
• Time Off: Flexible vacation policy to encourage people to get out and see the world.
• Team Fun: Regularly scheduled events, and celebrations.
• Learning: Learning and development Opportunities to grow your skills and career.
• Great team: Working with fun, hard-working, kind people committed to making a difference!
• Flexible culture: We are results-focused. We don’t work at the office every day.

What This Job Offers

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