R&D Metallurgist

San Francisco HQfull time

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On Site

mid

$110k–$140k

H1B: no

Marianaminerals R&D Metallurgist at Mariana Minerals responsible for designing, executing, and analyzing experiments to advance hydrometallurgical testing programs. Operates laboratory and pilot-scale equipment and analyzes data to optimize critical mineral extraction.

Responsibilities

The R&D Metallurgist designs, executes, and analyzes experiments to advance Mariana Minerals' hydrometallurgical testing programs. This hands-on laboratory and pilot-scale role focuses on running DOE protocols, operating tank reactors and mining systems, and analyzing data to optimize extraction for critical minerals.
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
Support DOE planning and multi-variable optimization studies

Qualification

Bachelor's degree in ChemistryExperience with DOE software (JMP

Required

Bachelor's degree in Chemistry, Chemical Engineering, Metallurgy, or related technical field preferred
5+ years' experience in chemical processing, hydrometallurgy, or laboratory/pilot plant operations
Experience with Design of Experiments (DOE) methodology and statistical analysis highly desirable
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
Experience with DOE software (JMP, Minitab, Design-Expert) is a plus
Exceptional attention to detail and data integrity
Strong analytical and problem-solving skills
Excellent communication and documentation abilities

Preferred

Bachelor's degree in Chemistry, Chemical Engineering, Metallurgy, or related technical field preferred
5+ years' experience in chemical processing, hydrometallurgy, or laboratory/pilot plant operations
Experience with Design of Experiments (DOE) methodology and statistical analysis highly desirable
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

Company

Marianaminerals

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Source: ashby

Active within the past hour

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