Crane operators load, unload and move materials, build retaining walls and drive piles. They may have to operate a concrete pump or assemble and perform maintenance on mobile and tower cranes as part of their duties. This demanding job requires good vision, physical stamina, excellent manual dexterity and good reflexes. A career as a crane operator is suitable for self-reliant, meticulous people with a good sense of observation who pay attention and can work at heights.