Phoenix Tailings · 22 hours ago
Chemical Development Engineer I
Burlington, MA
Full-time
Hybrid
Entry Level
$70K/yr - $100K/yr
1+ years expPhoenix Tailings is a rapidly growing clean mining and metals production startup dedicated to sustainable and economic critical metals production. They are seeking a Junior Chemical Engineer to support the design, execution, and analysis of rare earth element processing technologies.
Advanced MaterialsCleanTechIndustrialManufacturingMiningSustainabilityWaste Management
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
Qualification
Required
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
Driven by curiosity, mission, and a desire to help solve one of the most important resource challenges of our time
Preferred
Familiarity with rare earth chemistry or hydrometallurgy is a plus
Benefits
100% Medical, dental, and vision coverage
Ownership in a fast-growing venture-backed company.
Parental leave and flexibility for families.
Flexible vacation policy to encourage people to get out and see the world.
Regularly scheduled events, and celebrations.
Learning and development Opportunities to grow your skills and career.
Working with fun, hard-working, kind people committed to making a difference!
We are results-focused. We don’t work at the office every day.
Company
Phoenix Tailings
Phoenix Tailings is a metals-refining company that transforms mining waste (“tailings”) into usable rare earth and critical metals.
51-200 employees
H1B Sponsorship
Phoenix Tailings has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2024 (3)
2023 (1)
2022 (1)
Funding
Current Stage
Growth StageTotal Funding
$104.24MKey Investors
ARPA-EEnvisioning PartnersMassVentures
2025-12-25Series B
2025-12-04Grant· $1.6M
2025-04-30Series B· $33M
Leadership Team
Nicholas Myers
CEO & Co-Founder
Anthony Balladon
Chief Commercial Officer & Co-Founder
Recent News
2025-12-30
2025-12-29
Company data provided by crunchbase