7.5. Senior Mechanical Engineer at Phoenix Tailings – Burlington, Massachusetts
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About This Position
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.
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
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
- 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.