A Mobile Maintenance Supervisor oversees the repair, servicing, and ongoing preventative maintenance of mobile heavy equipment (such as haul trucks, excavators, loaders, dozers, drill rigs, or fleet vehicles). To achieve our purpose to create a world without waste to preserve our planet, we are guided by our Principles of Purpose: Be Safe + Well, Band Together, Be Accountable + Transparent, Consistently Innovate, Inspire with Purpose, Celebrate + Have Fun.