Skilled worker in a star production (7)
I believe the answer is:
artisan
'skilled worker' is the definition.
(an artisan is a skilled craftsperson)
'in a star production' is the wordplay.
'production' indicates anagramming the letters.
'in'+'a'+'star'='inastar'
'inastar' is an anagram of 'ARTISAN'.
(Other definitions for artisan that I've seen before include "Skilled worker at craft or trade" , "Skilled workman" , "one in command of craft?" , "Train as (anag) - craftsman" , "Skilled tradesman" .)