Phoenix Tailings · 11 hours ago
7.4. Process Engineer I – Recycling
Exeter, NH
Full-time
Hybrid
New Grad, Entry Level
0+ 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 motivated and curious Process Engineer I – Recycling to support the development and operation of closed-loop recycling systems for critical metals production.
Advanced MaterialsCleanTechIndustrialManufacturingMiningSustainabilityWaste Management
Responsibilities
Support the design and improvement of internal recycling systems used across Phoenix Tailings’ refining and metallurgical processes
Assist in developing closed-loop recovery methods for solvents, extractants, and reagents used in hydrometallurgical operations
Perform material and mass balance calculations to help evaluate recycling efficiency and process performance
Execute bench-scale and pilot-scale experiments to test recycling and recovery concepts
Collect, analyze, and interpret experimental and operational data to inform process improvements
Support integration of recycling steps into existing and new process flows
Document experimental results, process changes, and standard operating procedures
Assist with troubleshooting process upsets related to recycling and reagent recovery
Qualification
Required
B.S. in Chemical Engineering, Materials Science, Metallurgical Engineering, or a closely related field
0–2 years of experience through internships, co-ops, research, or full-time roles in chemical or process engineering
Foundational understanding of chemical separations, mass transfer, and reaction engineering
Familiarity with hydrometallurgical concepts such as solvent extraction, leaching, or precipitation (academic or practical)
Comfort working in lab and pilot-scale environments with hands-on experimental work
Ability to analyze data, perform calculations, and clearly communicate technical findings
Strong desire to learn, take ownership of technical challenges, and contribute to a mission-driven team
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