7.4. Process Engineer I - Recycling
Phoenix Tailings
Exeter, NH, USA
Posted on Feb 5, 2026
About Phoenix Tailings
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.
Why Phoenix Tailings
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.
Our Values:
● You are only crazy if you are wrong, it’s ok to be wrong
● Lead with Compassion
● Be Resourceful
● Listen
● Hustle
Who We Are Looking For:
Phoenix Tailings is looking for a motivated and curious Process Engineer I – Recycling to support the development and operation of our closed-loop recycling systems for critical metals production. This is a hands-on, high-impact role for an early-career engineer who wants to learn how sustainable metallurgy is built from the ground up. You will work directly with senior engineers and scientists to help design, test, and operate recycling systems that reduce waste, recover valuable reagents, and move Phoenix closer to full circularity. Your work will directly influence how our processes scale and how clean metals are produced globally.
Key Responsibilities:
- Support the design and improvement of internal recycling systems used across Phoenix Tailings’ refining and metallurgical processes
- Assist in developing closed-loop recovery methods for solvents, extractants, and reagents used in hydrometallurgical operations
- Perform material and mass balance calculations to help evaluate recycling efficiency and process performance
- Execute bench-scale and pilot-scale experiments to test recycling and recovery concepts
- Collect, analyze, and interpret experimental and operational data to inform process improvements
- Support integration of recycling steps into existing and new process flows
- Document experimental results, process changes, and standard operating procedures
- Assist with troubleshooting process upsets related to recycling and reagent recovery
Qualifications:
- B.S. in Chemical Engineering, Materials Science, Metallurgical Engineering, or a closely related field
- 0–2 years of experience through internships, co-ops, research, or full-time roles in chemical or process engineering
- Foundational understanding of chemical separations, mass transfer, and reaction engineering
- Familiarity with hydrometallurgical concepts such as solvent extraction, leaching, or precipitation (academic or practical)
- Comfort working in lab and pilot-scale environments with hands-on experimental work
- Ability to analyze data, perform calculations, and clearly communicate technical findings
- Strong desire to learn, take ownership of technical challenges, and contribute to a mission-driven team
We offer a competitive compensation package that is based on expertise. We also offer the following 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.
At Phoenix Tailings, we have an open culture that values learning, and we are looking to grow the team with enthusiastic individuals who share our vision of sustainable mining.
Phoenix Tailings, Inc. is an Equal Opportunity Employer, and we value diversity at all levels. All qualified candidates will receive consideration for employment without regard to race, color, religion, sex (including gender identity, sexual orientation, and pregnancy), national origin, age, disability or genetic information, or any other applicable protected characteristics, and these characteristics will not be a factor for consideration of any work-related decisions (including but not limited to hiring, firing, compensation, and discipline).
