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Mobile Maintenance Supervisor

Mariana Minerals· Plant Operations
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Moab, UTFull-timePosted 1mo ago

About the role

Hands-on working supervisor leading a team of maintenance technicians to support safety, reliability, and availability of Mariana’s mobile mining fleet. Combines technical leadership, field troubleshooting, crew development, maintenance planning, and day-to-day operational decision-making.

Responsibilities

  • Lead, supervise, and develop a team of maintenance technicians while maintaining a safety-first mentality and a strong culture of accountability, teamwork, and continuous improvement.
  • Conduct safety meetings and workplace inspections, address hazards, and ensure work is performed in accordance with company policies and applicable safety requirements.
  • Work hands-on alongside technicians to troubleshoot, diagnose, and repair heavy mobile mining equipment, including mechanical, hydraulic, and electrical systems.
  • Prioritize and coordinate daily maintenance activities based on safety, equipment criticality, production needs, labor, parts, and available resources.
  • Perform advanced troubleshooting and failure analysis using diagnostic tools, schematics, technical manuals, and equipment documentation.
  • Drive equipment reliability and availability through preventative maintenance, repair-quality review, equipment-status tracking, and identification of recurring failures.
  • Coordinate with planners, operations, and vendors to schedule repairs, manage work orders, source parts, and communicate repair requirements and expected downtime.
  • Train and mentor technicians, provide technical leadership in the field, and provide on-call support as needed, including serving as the senior maintenance representative when leadership may not be onsite.

Qualifications

  • Previous supervisory, lead technician, or crew-leadership experience, with the ability to coach technicians and provide technical direction in the field.
  • Minimum of 5 years of mining maintenance experience, with strong hands-on experience supporting heavy mobile mining equipment.
  • Strong troubleshooting and failure-analysis skills across mechanical, hydraulic, and electrical systems, including the ability to read hydraulic and electrical schematics; welding experience is a plus.
  • Experience with Caterpillar mobile mining equipment and electronic diagnostic tools; familiarity with CAT ET, CAT SIS, and direct experience with CAT 777 haul trucks and/or CAT 992K wheel loaders is strongly preferred.
  • Strong communication, organization, and problem-solving skills, with the ability to make decisions, take ownership, and work effectively in a growing operation where processes and systems are still being developed.
  • Experience using maintenance tracking systems and Microsoft Office applications.
  • Experience with autonomous mining technology is a plus.
  • Valid driver’s license required.

Skills

Required:Supervisory/leadership experienceMechanical, hydraulic, and electrical troubleshootingReading schematics and technical manualsCAT equipment experienceMaintenance planning and schedulingSafety leadership
Nice to have:Autonomous mining technology

Benefits

  • Housing & relocation assistance options are available.
Last updated Oct 7, 2026. Interested? Apply on the company site.

About Mariana Minerals

We to the Future of Minerals, verify the mineral supply chain.

Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies.

software-firstmineralsenergyAIdefense
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