Akademik

someone who supervises the physical aspects in the production of a show and who is in charge of the stage when the show is being performed

noun, pl ⋯ -ers [count]

: a person who is in charge of the stage, scenery, lighting, etc., for a performance in a theater

ˌstage ˈmanager [stage manager stage managers] noun

the person who is responsible for the stage, lights, ↑scenery, etc. during the performance of a play in a theatre