R&D Metallurgist

The role

The R&D Metallurgist designs, executes, and analyzes experiments to advance hydrometallurgical testing programs. This role focuses on running DOE protocols, operating tank reactors and mining systems, and analyzing data to optimize extraction for critical minerals.

What you will do

• Develop Design of Experiments (DOE) protocols for chemical processing, extraction, and purification
• Analyze metallurgical and process data to identify trends, root causes, and optimization opportunities
• Operate tank reactors, filtration systems, separation equipment, and purification units at bench and pilot scale
• Prepare chemical solutions and reagents according to experimental specifications
• Monitor and control process parameters: temperature, pH, flow rates, residence time, and reagent dosing
• Perform systematic sampling and material handling throughout process streams
• Collect experimental data including process parameters, weights, volumes, and analytical results
• Analyze data using Excel and statistical tools to evaluate performance and identify optimization opportunities
• Generate clear data visualizations, charts, and summary reports
• Maintain detailed laboratory notebooks and digital documentation

Required qualifications

• 5+ years' experience in chemical processing, hydrometallurgy, or laboratory/pilot plant operations
• Hands-on experience with chemical reactors, filtration, and separation equipment
• Advanced Excel proficiency (pivot tables, statistical functions, data visualization)
• Understanding of chemical process fundamentals (mass balance, stoichiometry, reaction kinetics)
• Knowledge of purification techniques (precipitation, solvent extraction, ion exchange, crystallization)
• Ability to read P&IDs and process flow diagrams
• Exceptional attention to detail and data integrity
• Strong analytical and problem-solving skills
• Excellent communication and documentation abilities
• Self-motivated with ability to manage multiple experiments
• Unwavering commitment to safety and quality
• Valid driver's license required

Nice to have

• Bachelor's degree in Chemistry, Chemical Engineering, Metallurgy, or related technical field preferred
• Experience with Design of Experiments (DOE) methodology and statistical analysis highly desirable
• Experience with DOE software (JMP, Minitab, Design-Expert) is a plus

About the company

Mariana Minerals is a software-first, vertically integrated minerals company on a mission to supply the critical minerals powering modern energy, AI, and defense technologies.