R&D Metallurgist
Mariana Minerals•San Francisco, CA
•$110,000 - $140,000•Onsite
About The Position
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.
Requirements
- 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
- 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 Haves
- Experience with DOE software (JMP, Minitab, Design-Expert) is a plus
Responsibilities
- 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
- Perform routine maintenance, calibration, and troubleshooting of processing equipment
- Follow all chemical handling, PPE, and MSHA/OSHA safety protocols
- Maintain clean, organized, and safe laboratory environments
- Conduct hazard assessments for chemical processes and experimental setups
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
