A member of the military who specializes in manufacturing and repairing weapon systems.
An inventor.
A savant.
Someone who is skilled in their trade; an artisan.
A trickster.
A person who operates machinery.
A constructor of machines and engines; one versed in the principles of machines.
One skilled in the use of machine tools for fashioning metal parts or tools out of metal.
A person employed to shift scenery in a theater.