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1.2. Senior Solvent Extraction Engineer

Phoenix Tailings

Phoenix Tailings

Burlington, MA, USA
Posted on Thursday, January 25, 2024
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, 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
Lead the charge in unlocking the power of rare earth elements with cutting-edge solvent extraction technology!
We are seeking a highly motivated and experienced Senior Solvent Extraction Engineer to spearhead the development and optimization of our solvent extraction processes for rare earth element recovery. You will play a pivotal role in driving innovation and efficiency, ensuring we responsibly and sustainably extract these critical resources for the future of clean energy, electric vehicles, and advanced electronics.

Key Responsibilities:

  • Guide the design, development, and optimization of advanced solvent extraction processes for efficient and selective separation of rare earth elements from various feed sources.
  • Conduct pilot-scale testing, analyze data, and implement advanced strategies to optimize process performance, solvent selection, extractant design, and flowsheet optimization.
  • Lead the detailed engineering of the solvent extraction system, including equipment selection, sizing, and integration with upstream and downstream processes.
  • Mentor and guide junior engineers and technicians, fostering a collaborative and knowledge-sharing environment within the team.
  • Continuously research and stay updated on the latest advancements in solvent extraction technology and rare earth element processing, identifying and implementing opportunities for technological improvement.
  • Ensure projects are delivered on time, within budget, and to required specifications while effectively managing resources and budgets.
  • Prepare clear and concise technical reports, presentations, and proposals for both technical and non-technical audiences.
  • Provide strategic insights and recommendations on technology roadmap, resource allocation, and market trends related to rare earth element separation.


  • Master’s degree in chemical engineering, Extractive Metallurgy, or a related field.
  • Minimum 7 years of experience in solvent extraction process design and development, with at least 5 years in a senior leadership role.
  • Proven track record of success in optimizing and leading the development of complex chemical processing systems.
  • In-depth understanding of chemical equilibrium, mass transfer, and separation science principles.
  • Demonstrated expertise in process simulation software like ASPEN Plus and CHEMCAD.
  • Exceptional analytical and problem-solving skills, with a talent for identifying and implementing innovative solutions.
  • Strong leadership qualities, effective communication skills, and the ability to motivate and mentor a team.
  • Collaborative and results-oriented, with a strong work ethic and ability to thrive in a fast-paced environment.
  • Passion for sustainable development and commitment to responsible resource extraction.

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 & 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).