Lead Separation Engineer

Responsibilities

• Lead the full lifecycle of solvent extraction process development: from bench-scale R&D through pilot and into full-scale commercial deployment
• Design, operate, and optimize bench-scale experiments to evaluate separation performance and extract ant chemistry
• Develop and operate pilot-scale solvent extraction systems, collecting real-time data and translating findings into scalable design improvements
• Define scale-up strategy, equipment selection, and process control logic for transition to production-scale systems
• Create and maintain detailed process documentation, including mass balances, PFDs, SOPs, and operational guidelines
• Build and mentor a growing separation process team, including chemical engineers and technicians
• Identify critical process bottlenecks and propose engineering solutions using both experimental and modeling approaches
• Ensure safety, reliability, and process integrity across all phases of development
• Contribute to broader separation technology roadmaps and help set technical direction for future rare earth and critical metal systems

• B.S., M.S., or Ph.D. in Chemical Engineering, Metallurgical Engineering, or a related field
• 5+ years of hands-on experience in solvent extraction, hydrometallurgy, or chemical process development
• Proven success scaling chemical separation processes from lab to pilot to production
• Deep understanding of separation chemistry, extract ant systems, and multi-stage liquid-liquid extraction equipment
• Experience designing and operating pilot systems such as mixer-settlers, centrifugal contractors, or columns
• Strong background in data analysis, process modeling (e.g., Aspen, MATLAB), and scale-up engineering principles
• Demonstrated ability to lead and grow technical teams, with strong mentoring and collaboration skills
• Comfortable working in a dynamic, fast-paced environment with evolving priorities

• Healthcare: 100% Medical, dental, and vision coverage for employee
• Stock Options:
  Ownership in a fast-growing venture-backed company
• Time Off:
  Unlimited PTO
• Learning:
  Learning and development opportunities to grow your skills and career

This pay range reflects best estimate for the total cash compensation which includes salary + discretionary bonus for this role. Total package may vary based on experience and qualifications.

Pay Range: $150,000- $180,000 total cash compensation plus equity

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).