Vox Bone API integration with A2billings - open to bidding

I am looking for experienced person who can integrated VOXBONE API with A2billing platform . User login should be and security should be per account . User will login with his register account which will allow him to lavage accessibility to API . API FUNCTIONS Needed ; Retrieve Voxbone's coverage and price list Retrieve a full direct inward dialing (DID) list in an account Retrieve stock for a specific area Map numbers to capacity groups, channels and URIs Configure codecs and allowed services Retrieve a current account balance Purchase credits for Vox800 and VoxSMS Purchase or cancel numbers Purchase channels Retrieve Voxbone's POP list Check and track order status Download CDRs Manage regulation requirements CSS should be done to meet the look and feel of the current Panel ( Bootstrap )