Rigger (noun)

1. A person who is skilled in the rigging of ships or other vessels, or in the rigging of theater productions, or construction sites.
2. A person who sets up or installs equipment or machinery.

Origin:

From the verb "to rig", meaning to fit or equip something.

Examples:

1. The rigger climbed the mast to fix the sail.
2. The rigger was responsible for setting up the stage.
3. The rigger was in charge of the crane on the construction site.
4. The rigger installed the rigging on the ship.
5. The rigger was responsible for setting up the equipment on the oil rig.