Overlooked builder on girder section being pushed back (7)
I believe the answer is:
ignored
'overlooked' is the definition.
(I've seen this before)
'builder on girder section being pushed back' is the wordplay.
'section' indicates the answer is hidden within the clue.
'being pushed back' says the letters should be written in reverse.
'derongi' is hidden in the letters of 'builder on girder'.
'derongi' in reverse letter order is 'IGNORED'.
(Other definitions for ignored that I've seen before include "Cut" , "Took no notice of" , "Paid no heed" , "cast aside" , "Paid no attention to" .)