MasTec - - Responsibilities: Operate jobsite equipment safely, such as mobile cranes, bulldozers, angle dozers, front end loaders, backhoes, excavators, track hoe, trenchers, digger-derricks, or other construction equipment.; Perform service, safety checks, and minor repairs on machines, check oil and fluids.; Inspect digging areas to ensure it has been staked/located prior to digging.; Train, guide, or oversee work of lower graded operators and laborers, when needed.; Load trucks in a safe and accident-free manner.