Rush to get the post? (6)
I believe the answer is:
career
This clue is a double definition.
'rush' is the first definition.
(thesaurus)
'the post?' is the second definition.
(thesaurus)
'to get' acts as a link.
(Other definitions for career that I've seen before include "Dash - profession" , "Life (in terms of work etc)" , "Rush - occupation" , "Rush headlong" , "Rush madly" .)