3.3. Senior Chemical Process Engineer-Separation

Phoenixtailings; Burlington (MA); On-site; USD 120,000 - 160,000; Full time

Benefits offered by this job

100% medical, dental, and vision coverage

Unlimited PTO

Learning and development opportunities

Stock options

Job summary

Phoenixtailings is seeking a Senior Chemical Process Engineer to design and scale solvent extraction systems for rare earth elements. Your expertise will drive the mission for a sustainable domestic supply of critical materials.

Responsibilities include executing process development, analyzing results for design improvements, and collaborating with a team of scientists and engineers. A strong background in chemical engineering and experience in startup environments are essential for this hands-on role.

Competitive compensation includes a salary range of $120,000-$160,000, equity options, and comprehensive healthcare coverage.

Qualifications

• 5+ years of experience in industrial chemical engineering with a focus on rare earth elements.
• Hands-on experience with solvent extraction for critical metal separation.
• Ability to safely operate lab and pilot-scale chemical processes.

Responsibilities

• Develop solvent extraction processes from bench to pilot scale.
• Design and operate experiments to evaluate reagent efficiency.
• Collaborate with chemists and engineers to meet project goals.

Skills

Solvent extraction experience

Analytical skills

Process simulation tools

Communication skills

Education

M.S. or B.S. in Chemical Engineering

Tools

METSIM

Aspen

Job description

Senior Chemical Process Engineer

Senior Chemical Process Engineer at Phoenix Tailings is responsible for designing, optimizing, and scaling solvent extraction systems to separate and refine rare earth elements. This hands‑on, impact‑driven role directly accelerates the company’s mission to establish a domestic, sustainable supply of critical materials.

Responsibilities

• Execute solvent extraction process development for rare earth element separation, from bench to pilot scale
• Design and operate solvent extraction experiments, evaluating efficiency, selectivity, and stability of reagent systems
• Assist in scaling up processes through data analysis, process modeling, and mass/energy balance development
• Contribute to the design of pilot‑scale equipment including mixer‑settlers, columns, or centrifugal contactors
• Analyze experimental results to recommend design or operating condition changes that improve process performance
• Develop and maintain process documentation including SOPs, PFDs, and process data logs
• Support technology transfer from R&D to operations, including commissioning, startup, and troubleshooting
• Maintain a strong focus on safety, chemical handling, and environmental stewardship in all aspects of process work
• Collaborate with a cross‑functional team of chemists, metallurgists, and engineers to deliver on project milestones

Qualifications

• M.S. or B.S. in Chemical Engineering, Metallurgical Engineering, or related field with 5+ years of industrial experience
• Hands‑on experience with solvent extraction for rare earth or critical metal separation
• Solid understanding of phase separation dynamics, reagent selection, and extraction circuit design
• Demonstrated ability to operate lab and pilot‑scale chemical processes safely and effectively
• Familiarity with process simulation and modeling tools (e.g., METSIM, Aspen, or similar)
• Strong analytical and data interpretation skills with an experimental mindset
• Experience working in a fast‑paced, startup, or R&D‑intensive environment is a plus
• Excellent communication and technical documentation skills

Compensation & Benefits

Pay Range: $120,000- $160,000 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

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).