3.1. Principal Chemical Process Engineer-Separation

United States·BurlingtonFull Timelead

OtherChemical Process Engineer

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Overview

Lead the development and optimization of solvent extraction circuits for rare earth element separation from both primary and secondary sources Design and execute bench- and pilot-scale experiments to evaluate separation efficiency, reagent performance, and system dynamics Translate…

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OtherChemical Process Engineer

Lead the development and optimization of solvent extraction circuits for rare earth element separation from both primary and secondary sources

Design and execute bench- and pilot-scale experiments to evaluate separation efficiency, reagent performance, and system dynamics

Translate laboratory-scale successes into scalable, industrial processes with a focus on safety, sustainability, and cost-effectiveness

Own and evolve process flow diagrams (PFDs), mass balances, and P&IDs for solvent extraction systems

Drive selection and specification of extractants, diluents, and equipment (e.g., mixer-settlers, columns, or centrifugal contactors)

Analyze separation performance data to identify improvement opportunities and implement process changes

Collaborate closely with metallurgy, chemical engineering, and operations teams to support plant commissioning and troubleshooting

Author technical reports, scale-up plans, and design documentation to support commercialization of Phoenix Tailings’ extraction technologies

Stay at the forefront of solvent extraction technologies and rare earth processing trends to inform and elevate process strategy

Ph.D. or M.S. in Chemical Engineering, Metallurgical Engineering, or related discipline with 8+ years of relevant experience

Proven expertise in rare earth element/critical metals separation via solvent extraction, including reagent chemistry, process configuration, and optimization

Hands-on experience with lab-scale and pilot-scale solvent extraction systems, including safety and operational best practices

Deep understanding of phase equilibria, thermodynamics, and kinetics relevant to solvent extraction

Demonstrated success in scaling up chemical separation processes from bench to pilot to commercial scale

Proficiency with process modeling tools (e.g., Aspen, METSIM, or similar)

Excellent problem-solving skills with a passion for experimental validation and continuous improvement

Strong written and verbal communication skills, especially in cross-disciplinary environments

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

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.