# Mobile Maintenance Supervisor at Mariana Minerals

- Company: Mariana Minerals
- What the company does: 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.
- Company website: https://marianaminerals.com/
- Type: Startups
- Level: Mid level
- Location: Moab, UT
- Work setup: On-site
- Posted: 2026-09-09
- Apply by: 2026-10-24
- Apply: https://jobs.ashbyhq.com/marianaminerals/44e4b7c1-53bf-442c-aecf-31edf7920f70
- Page: https://www.1752.vc/careers/jobs/mariana-minerals-mobile-maintenance-supervisor/

## About the role

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.

## What they're looking for

- 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

Tags: Copper One