Process Engineer

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.

Position Summary:

We are looking for a Senior Process Engineer to work with our innovative, fast-paced multidisciplinary team. They will be responsible for liaising between R&D and operations, with a focus on chemical process development, successful scale-up of new product execution, and sustaining technology-manufacturing readiness. This person must be flexible, proactive, and professional with experience in scale-up and process development applications such as chemical refining, hydrometallurgy, minerals, and chemical processing.

Key Responsibilities:

• Lead the development and scale-up of lab processes on pilot and production scales, with a focus on improving metal recovery and reducing cost and environmental impact.
• Identify potential process risks, and propose, and evaluate solutions to mitigate the risks.
• Evaluate process capability, improve process control, and deliver samples to customers.
• Conduct detailed process simulations and modeling to predict process behaviors under various scenarios.
• Develop, prepare, and provide detailed production and process guidelines, including: standard operating procedures (SOPs), process flow details, safety, and quality standards.
• Improve and troubleshoot products, equipment, and process issues during production.
• Provide technical leadership and mentorship to junior scientists, engineers, and technical staff.
• Guide the R&D team and any external partners in the design and execution of experiments to develop the required base data for chemical process design.
• Drive chemical process design and development from the concept stages to scaled production, ensuring quality is maintained throughout the lifecycle of the project.
• Develop and model potential process designs for scale-up and cost estimating based on lab-scale chemical processes.
• Identify potential process risks, and propose, and evaluate solutions to mitigate the risks.
• Evaluate process capability and improve process control.
• Required Qualifications: A bachelor’s degree in chemical engineering or a related discipline is required.
• 3-5 years of experience in Chemical Process and/or Development Engineering required.
• Hands-on experience scaling processes from R&D to an operating environment.
• Expertise in process modeling, development, control, and scale-up.
• Coordinate and execute bench-top, pilot, manufacturing scale-up, and verification batches with speed and robustness.
• Proficient in using software for process analysis and modeling.
• Sound understanding of chemical processes and their scale-up.
• Strong leadership and interpersonal skills for implementation of cross-functional process improvements.
• Strong background in analytical & quantitative skills for problem-solving of large/complex problems & proven ability in decision-making
• Desired Qualifications: Hydrometallurgy experience
• Mining experience
• Battery material experience
• Our culture is built on four principles: Everyone Gets Home Safe.
• We never put speed or cost ahead of people.
• Extreme Ownership.
• We take full responsibility for outcomes, relentlessly driving toward solutions.
• Engineer Out Requirements, then Automate.
• We simplify, optimize, and then automate for scale.
• Share Your Legos.
• We collaborate openly, share knowledge, and empower each other to build bigger, better solutions.
• Join us as we build the future of responsible mineral sourcing and supply!