CHIEF ELECTRICIAN
The senior member of the theatre's stage lighting team, although not necessarily the lighting designer. Known in the US as MASTER ELECTRICIAN.
In common with many theatre jobs, the actual duties of the Chief Electrician vary from theatre to theatre. Some chiefs are responsible for electrical maintenance of the building, some design the lighting for nearly every in-house production, some design no lighting at all, some have a team of eight staff under them, some have two. Many theatres employ casual staff to assist on lighting rigging sessions. Some theatres have a separate sound department, smaller venues have the lighting team also running sound for shows (and doing sound design for some).
Abbreviated to CLX in some UK venues.