Deck - Repair/Remodel

I need to repair my deck. It surrounds an 18x33 above ground pool. The liner gave way last week and blew out one of the footings under the deck and now the deck is sagging. The pool and the hole in the ground have been repaired, but the deck needs to be jacked up and at least one footing and support post need to be installed and the whole deck needs to be checked to make sure it's sound following the flood of water that caused the damage.