Process Engineer

About the job

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. KEY RESPONSIBILITIES Process ownership – SX and EW - Act as the engineering owner of the SX and EW circuits, including mixer-settlers, organic and electrolyte handling, tank house, cell house and associated utilities. - Monitor daily plant performance (PLS grade and flow, extraction and stripping efficiency, phase continuity, entrainment, current…