Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies. Backed by Khosla and a16z.
About the role
Scope, design, and lead process improvement and capital projects from concept through commissioning Develop process flow diagrams, P&IDs, mass and energy balances, and equipment specifications Found on 1752vc Careers, the job board for startup and VC roles.
What they're looking for
- Bachelor's degree in Mechanical Engineering preferred or another related engineering degree
- Process or mechanical engineering experience in mining, chemical, oil & gas, or other heavy industrial operations, 4+ years
- Hands-on experience taking projects from design through commissioning and startup
- Comfort reading and producing P&IDs, PFDs, and equipment datasheets
- Strong data skills, experience with process data historians, Python, or similar tools is a plus
- Experience with hydrometallurgy, leaching, solvent extraction, or electrowinning is a plus
More about this role
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 Project Engineer designs and deploys first-of-a-kind mining and refining technologies at our Moab site. In this role, you will work across Mariana's process development, software, plant engineering, project execution, and operations teams to plan, build, and deliver the cross-functional projects that move our plant forward. The work varies week to week, from scoping a project and sizing equipment to standing beside the mechanic and electrician during startup. You will own projects from idea to handover and build new skills along the way.
Scope, design, and lead process improvement and capital projects from concept through commissioning
Develop process flow diagrams, P&IDs, mass and energy balances, and equipment specifications
Size and select pumps, tanks, piping, and other process equipment
Use plant data to find bottlenecks, improve recovery, and cut...
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