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.

Through its Copper One platform, Mariana Minerals owns and operates Lisbon Valley Mining Company, a producing open-pit copper mine in southeastern Utah running 24/7.

As a Process Maintenance Technician, you'll maintain and repair everything that's "nailed to the ground": pumps, compressors, boilers, piping, valves, and the buildings that keep the operation running. The ideal candidate is strong in at least one area, such as pumps, welding, or troubleshooting, and is ready to cross-train in the rest.

Responsibilities

• Diagnose, install, and repair fixed plant equipment, including pumps, compressors, boilers, fans, motors, gearboxes, piping, valves, and automated valves, identifying root causes.

• Maintain site buildings and infrastructure, including truck shops, admin buildings, and plumbing systems, along with portable equipment suc