Phoenix Tailings · 5 months ago
2.3. Chemical Engineer I
Burlington, MA
Full-time
Onsite
Entry Level
2+ 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 contribute to the design, development, and optimization of innovative critical metals production systems.
Advanced MaterialsCleanTechIndustrialManufacturingMiningSustainabilityWaste Management
Responsibilities
Design and execute experiments to evaluate and optimize chemical processes for metal extraction and purification
Analyze reaction kinetics, thermodynamics, and mass transfer phenomena to inform process improvements
Develop and scale chemical unit operations including leaching, solvent extraction, and precipitation
Support the transition of processes from lab-scale to pilot-scale and ultimately full-scale production
Work with cross-functional teams to troubleshoot systems, gather process data, and continuously improve performance
Conduct rigorous chemical and materials analysis to assess purity, yields, and byproduct profiles
Collaborate with R&D and engineering to develop safe, efficient, and environmentally responsible chemistries
Document procedures, results, and design learnings to support IP generation and knowledge sharing
Qualification
Required
B.S. or M.S. in Chemical Engineering, Materials Science, or related discipline
2–5 years of experience in chemical process development, preferably in hydrometallurgy, critical minerals, metals, mining, or advanced materials
Strong foundation in chemical reaction engineering, thermodynamics, and separation technologies
Experience designing and running lab-scale chemical experiments and analyzing data
Familiarity with tools such as HSC Chemistry, Aspen, or similar simulation software is a plus
Passion for sustainability and interest in solving real-world environmental and resource challenges
A proactive, curious mindset with a desire to work in a fast-paced, high-impact startup environment
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