3.3. Senior Chemical Process Engineer-Separation

• 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  

• 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 

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: $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. 

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.