Mariana Minerals
R&D Metallurgist
$110K–$140K
San Francisco HQ · On-site · Full-time · Posted Sep 10, 2026
- Experience
- 5+ years' experience in chemical processing, hydrometallurgy, or laboratory/pilot plant operations.
- Education
- Bachelor's degree in Chemistry, Chemical Engineering, Metallurgy, or related technical field preferred.
About the job
Designs and runs laboratory and pilot-scale hydrometallurgical experiments, analyzes process data, and optimizes extraction and purification of critical minerals.
What you'll do
- Develop DOE protocols and conduct experiments, including operating processing equipment and monitoring process parameters.
- Analyze experimental and process data, create visualizations and reports, and maintain laboratory documentation.
- Maintain and troubleshoot equipment and follow chemical-handling and workplace safety protocols.
What they ask for
- 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, including pivot tables, statistical functions, and data visualization.
- Valid driver's license.
Nice to have
- Bachelor's degree in Chemistry, Chemical Engineering, Metallurgy, or related technical field preferred.
- Experience with DOE software (JMP, Minitab, Design-Expert) is a plus.
Pay
USD 110K – USD 140K base salary
Tools
Excel, JMP, Minitab, Design-Expert
Model-written summary · the original posting is authoritative