Airlines are in dire need of EXPERIENCED pilots...Your 5oo hrs in A320 will make you a very strong induction material for the airlines flying A320.
So far, Problem was your lack of Indian licence.
But the scenario is fast changing. You are Indian alright but are you expat Indian? Then there should not be any problems.
Air Deccan is hiring out right seat for expat FAA lic holders Maybe they can find a way to fit you in, even if you are not an expat, since you are already qualified.
Only the airlines know what kind of concessions thay have wangled out of the DGCA, to overcome the trained pilot shortage.dilemma.
I suggest you approach the airlines directly in this regard instead of wasting time asking around in the aviation forums.
Ofcourse, we will deeply appreciate your feedback after you receive hopefully a congenial reply from any the airlines, for other's benefit..