Hi , let me intreduce myself, i am a high level asterisk developer with 7 years of experience and you can see my reviews here , i was out freelancing for a 1 years because of two missions to prepare voip providers servers and stuffs , so i am at high level experience with any kind of requests and i'll explain how its works for your project :
So :
1-- We need an AGI (PHP or Perl) but preffered PHP AGI to execute the API Jsona dn retrieve objects , prepare action and fire events
2- You probably want to interact with a database to store or retrieve data and send them
i am very familiar with those kind of projects so will be very easy for me ,
i can provide a free test work if you want
pls feel free to contact me at my skype : mrdevelopper
or via PM here
Best regards