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2.5. Chemical Development Engineer I Burlington, MAPhoenix Tailings – 2. Critical Metals Extraction /Full Time /On-Site APPLY FOR THIS JOB 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. We are seeking a Junior Chemical Engineer to join our dynamic team and contribute to the design, development, and optimization of innovative critical metals production systems. 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 Who We Are Looking For: Phoenix Tailings is looking for a Development Engineer I with a strong technical foundation and a desire to apply their knowledge to solving real-world process challenges in critical metals recovery. In this role, you’ll support the design, execution, and analysis of rare earth element processing technologies and contribute to building out the technical infrastructure that enables the future of clean manufacturing. This position is ideal for someone with early-career experience or a strong academic background in chemical process engineering, including working with mass and energy balances, PFDs, and P&IDs. This pay range reflects the expected compensation for this role and may vary based on experience and qualifications. Salary Range: $70,000/year- $100,000/year Key Responsibilities: Design and execute laboratory-scale experiments across the rare earth extraction and metallization process flowsheet  Build and validate process models including comprehensive mass and energy balances  Optimize chloride leaching, dissolution, and filtration operations to improve efficiency and product quality  Support the development of advanced separation techniques for REE purification and concentration  Develop robust precipitation processes for conversion of rare earth chlorides into high-purity oxides  Contribute to early-stage metallization process R&D for converting oxides into individual rare earth metals  Analyze experimental data and use findings to drive iterative improvements to the process  Specify and evaluate equipment required for pilot and commercial-scale implementation  Document all research procedures, findings, and recommendations with technical precision  Ensure all experiments and development efforts align with EH&S and sustainability standards  Qualifications: B.S. in Chemical Engineering, Metallurgical Engineering, Materials Science, or a related field  1–3 years of experience in chemical or metallurgical process development (internships and co-op experience welcome)  Familiarity with mass and energy balances, process modeling, and basic process calculations  Experience interpreting or developing PFDs and P&IDs  Hands-on experience with laboratory or pilot-scale chemical equipment  Comfortable using tools for data analysis and reporting (Excel, Python, or similar)  Solid communication skills and ability to clearly document technical work  Familiarity with rare earth chemistry or hydrometallurgy is a plus  Driven by curiosity, mission, and a desire to help solve one of the most important resource challenges of our time  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.  F ... (truncated, view full listing at source)