A believer in hi-tech industry (5)
I believe the answer is:
hindu
'a believer' is the definition.
(believer in Hinduism)
'in hi-tech industry' is the wordplay.
'in' indicates the answer is hidden within the clue.
'HINDU' is hidden in the letters of 'hi tech industry'.
(Other definitions for hindu that I've seen before include "Follower of India's most popular religion" , "Member of religious group" , "Adherent of an Asian religion" , "Devotee of Indian religion" , "Brahma is one of his gods" .)