Hire for, as a position (4)
I believe the answer is:
fill
'hire for as a position' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for fill that I've seen before include "` `Work expands to .... the time available' '" , "Repair tooth" , "Top up" , "Satisfy (a need)" , "Plug (a gap)" .)