Top career excited father (9)
I believe the answer is:
procreate
'father' is the definition.
(I've seen this before)
'top career excited' is the wordplay.
'excited' indicates anagramming the letters.
'top'+'career'='topcareer'
'topcareer' is an anagram of 'PROCREATE'.
(Other definitions for procreate that I've seen before include "To be a breeder" , "Get children" , "Make children" , "Produce offspring" , "father" .)