Project Engineer

The role

The Project Engineer designs and deploys mining and refining technologies at the Moab site. You will work across process development, software, plant engineering, project execution, and operations teams to deliver cross-functional projects.

What you will do

• 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 costs
• Work with the project mechanic and project electrician on installs, checkout, and startup
• Partner with controls and operations teams on control strategies and operating procedures
• Lead hazard reviews and management of change, and keep projects compliant with site safety standards
• Manage project scope, schedule, and budget, including vendor and contractor coordination

Required qualifications

• 4+ years of process or mechanical engineering experience in mining, chemical, oil & gas, or other heavy industrial operations
• Hands-on experience taking projects from design through commissioning and startup
• Comfort reading and producing P&IDs, PFDs, and equipment datasheets
• Comfort working independently and a willingness to jump into unfamiliar problems
• Work in the processing plant in all weather conditions, including extreme temperatures, with exposure to fumes, dust, diesel, solvents, sulfuric acid, and other hazardous materials
• Able to stand, climb, bend, and kneel for extended periods, including work at heights and in tight spaces
• Adequate visual acuity, depth perception, and hearing (with correction or aids if needed) to work safely around operating equipment
• Ability to lift a minimum of 50 pounds
• Ability to wear required PPE at all times on site, including hard hat, safety glasses, steel-toe boots, hearing protection, and respiratory protection when needed

Nice to have

• Bachelor's degree in Mechanical Engineering preferred or another related engineering degree
• 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
• EIT or PE is a plus

About the company

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.