Supervisor - Mobile Maintenance, Surface Mine

Supervisor – Mobile Maintenance

Lead and develop a skilled maintenance team, with clear pathways to grow your leadership capability and take the next step in your career

Work in a supportive and inclusive team environment where your voice is valued, and different perspectives are respected and encouraged

Enjoy a balanced 5x5x4 (days and nights) lifestyle roster giving you more time for what matters outside of work while building a long-term career

At Rio Tinto, we are committed to creating an inclusive and welcoming workplace where everyone feels safe, respected, and able to succeed. We actively encourage applications from women and from people with diverse backgrounds, experiences, and perspectives. We know that great technical capability comes in many forms, and we're focused on building teams that reflect the communities we operate in and support each other to do their best work.

We're Finding Better Ways™ to provide the materials the world needs, now and in the future. Our values – care, courage and curiosity – guide how we work and how we treat each other.

About the Role

We are looking for a Supervisor – Mobile Maintenance to lead a team responsible for maintaining and repairing critical mining equipment, ensuring safe, reliable, and efficient operations.

Reporting to the Maintenance Superintendent, on a 5x5x4 rotating shift roster (days and nights) and working collaboratively with operational and functional teams, you will be responsible for:

• Leading, coaching, and managing a team of maintenance tradespeople and embedded contractors (typically 18–21 personnel)
• Promoting and enforcing a strong safety culture aligned to MSHA standards and Rio Tinto's Zero Harm commitment
• Leading incident investigations and ensuring effective corrective actions are implemented
• Ensuring compliance with site safety systems, permits, and risk assessments
• Supervising and coordinating preventative, corrective, and breakdown maintenance on heavy mobile mining equipment including haul trucks, dozers, excavators, loaders, graders, and drills
• Making real-time decisions to support safe and efficient production outcomes, including exercising stop-work authority when required
• Allocating resources and sequencing work based on operational priorities, equipment availability, and workforce capability
• Ensuring high-quality execution of maintenance activities, minimizing downtime and improving asset reliability
• Working closely with planning and operations teams to align maintenance activities with production requirements
• Identifying, investigating, and resolving equipment and operational issues to improve performance outcomes
• Maintaining accurate records in maintenance systems, including SAP, and supporting continuous improvement initiatives
• Facilitating effective shift handovers and team communication using tools such as Microsoft Teams, Outlook, and Excel

About You

• A commitment to the safety of yourself and your team
• Demonstrated leadership or supervisory experience within a mining or heavy industrial maintenance environment
• Strong experience maintaining heavy mobile equipment, including hydraulic and mechanical systems
• Proven ability to lead teams, manage competing priorities, and respond effectively during breakdowns and shutdowns
• Knowledge of preventative maintenance, fault diagnosis, and asset management practices
• Strong communication and stakeholder engagement skills across maintenance and operations teams
• Ability to build an inclusive, respectful, and high-performing team culture
• Minimum high school diploma or GED; trade qualification preferred
• Valid driver's license
• Preferred: experience with OEM equipment such as Caterpillar and/or Komatsu

This role is open to candidates who are legally authorized to work in the United States. We are not able to offer visa sponsorship for this position.

What We Offer

• A work environment where safety is always the number one priority.
• Competitive base salary reflective of your skills and experience with an annual incentive bonus.
• Access to top-tier family-friendly health programs including medical, prescription drug, dental, vision, life insurance coverage, and various voluntary benefits.
• Excellent retirement plan including up to 6% defined company contribution; Generous 401k matching program.
• Attractive share ownership plan.
• Comprehensive leave policies which cover all the moments that matter in life: PTO (paid time off), paid holidays, and paid bereavement leave.
• A generous parental leave policy, which ensures you're able to spend quality time with your new family.
• Discount programs for leisure purposes and access to Virgin Pulse with incentives supporting your wellbeing.
• Access to our Employee Assistance Program (EAP), which provides confidential counselling or expert guidance for you and your family to help get through life's challenges.

Where You'll Be Working

Our Kennecott mine is a world-class, fully integrated copper mining operation, including a concentrator, smelter, and refinery, located just outside Salt Lake City, Utah, in the United States. We produce copper, precious metals including gold and silver, molybdenum, and sulfuric acid. Kennecott has been mining and processing minerals from the rich ore body of the Bingham Canyon Mine since 1903 and is one of the top producing mines in the world, comprising approximately 11 percent of U.S. annual copper production.

About Rio Tinto

Rio Tinto is a leading global mining and materials company. We operate in 35 countries where we produce iron ore, copper, aluminium, critical minerals, and other materials needed for the global energy transition and for people, communities, and nations to thrive. We have been mining for 150 years and operate with knowledge built up across generations and continents. Our purpose is finding better ways to provide the materials the world needs – striving for innovation and continuous improvement to produce materials with low emissions and to the right environmental, social and governance standards. But we can't do it on our own, so we're focused on creating partnerships to solve problems, create win-win situations and meet opportunities.

Respect and Inclusion

Rio Tinto is committed to equal employment opportunity. All qualified applicants will be considered without regard to race, color, sex, age, religion, national origin, disability, or any other characteristic protected by federal, state, or local law.

We are committed to an inclusive environment where people feel safe, respected and valued. We want our people to feel that all voices are heard and that a variety of perspectives are not only welcome but are essential to our success. We treat all our people fairly and with dignity.

Rio Tinto participates in E-Verify to confirm work authorization. Please visit for more information.