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Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying critical minerals for modern energy, AI, and defense technologies. The company is reimagining the minerals supply chain through deep industry expertise combined with advanced software, automation, and data-driven decision-making.
As Senior Process Engineer, you will bridge R&D and operations, leading the development and scale-up of laboratory processes to pilot and production scales. Your focus will be on improving metal recovery while reducing costs and environmental impact.
Key responsibilities include: leading process development and scale-up initiatives; identifying and mitigating process risks; evaluating process capability and improving process control; conducting detailed process simulations and modeling to predict behavior under various scenarios; developing production guidelines, SOPs, and quality standards; troubleshooting production issues; providing technical leadership and mentorship to junior engineers and scientists; guiding R&D teams in experiment design and execution; driving chemical process design from concept through scaled production; and developing cost estimates based on lab-scale processes.
You will need a bachelor's degree in chemical engineering or related discipline, plus 3-5 years of hands-on experience in chemical process and/or development engineering. Required expertise includes process scaling from R&D to operating environments, process modeling and control, bench-top through manufacturing-scale batch execution, software proficiency for process analysis, and strong analytical and quantitative problem-solving skills. Leadership and cross-functional collaboration capabilities are essential.
Desired qualifications include hydrometallurgy, mining, or battery materials experience. The company culture emphasizes safety, ownership, engineering optimization, and collaborative knowledge-sharing.
