Process Engineering Intern

Job description

About Mariana Minerals 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. We’re reimagining the minerals supply chain by combining deep industry expertise with advanced software, automation, and data-driven decision-making. The Role: We are hiring a Process Engineering Intern to work on real, high-impact problems within the Pilot Plant Operations team in San Francisco. You will contribute directly to benchtop experiments, pilot plant test runs, and the creation of key plant operational programs, working closely with engineers and domain experts. This role is designed to provide hands-on experience building and shipping solutions, not just supporting tasks. What You’ll Do: Drive experiments in the lab and pilot plant to de-risk scaleup of critical minerals processing steps Build, test, and iterate on solutions to increase product recovery, decrease equipment downtime, controls costs, and improve health & safety Collaborate with engineering, management, and software engineering to build programs and applications for Mariana’s operations teams Collaborate with c...