Process Maintenance Technician

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 Process Maintenance Technician is responsible for maintaining, installing, troubleshooting, and repairing fixed plant equipment and process systems to ensure safe, efficient, and reliable operation of the processing facilities. This role supports production by minimizing downtime, maintaining equipment integrity, and ensuring compliance with safety and regulatory requirements.

The ideal candidate is safety-focused, mechanically skilled, and experienced in maintaining industrial or mining process equipment in a fast-paced, safety-sensitive environment.

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  Perform diagnostics, maintenance, installation, and repair of fixed plant equipment and associated systems, including pumps, compressors, boilers, fans, and valves.

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  Conduct preventive maintenance activities such as filter changes, seal inspections, oil level checks, lubrication servicing, and routine equipment adjustments.

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  Perform welding and fabrication tasks as required to support maintenance and repair activities.

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  Operate mobile and material-handling equipment, including forklifts, overhead cranes, and boom trucks, in accordance with safety procedures.

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  Maintain plant equipment in compliance with MSHA regulations and other applicable regulatory and company standards.

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  Perform maintenance and repairs on other mine facilities, including EW systems, infrastructure, and office buildings as needed.

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  Follow all safety policies, procedures, and PPE requirements while performing work.

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  Complete accurate and timely documentation in maintenance logs, work orders, and service records.

• Prior experience in fixed plant or process maintenance, preferably in mining, industrial, or heavy manufacturing environments.

• Strong ability to communicate and coordinate maintenance activities with operations, engineering, and other support departments.

• Working knowledge of pump, motor, and gearbox installation, repair, and rebuild.

• Experience with compressor teardown and rebuild activities.

• Understanding of hydraulic system fundamentals and basic troubleshooting.

• Ability to perform lubrication services and preventive maintenance on light-duty vehicles.

• Familiarity with oil sampling procedures and basic vehicle system diagnostics.

• Ability to read and interpret maintenance service manuals, parts manuals, and technical documentation.

• Organized, detail-oriented, and takes pride in high-quality workmanship.

• Valid driver's license required.