514829 Programming of Billing and Multiple SMS Gateway Connectivity

We have an existing sms platform (end user and reseller) nearing completion. We require the services of a developer who can do the following: • Programming of flexible billing (using credit model) of end user sms platform and reseller sms platform • Connection of platform to multiple sms gateway i.e. ability to switch platform between gateways. This gateway switching capability is feature is required to handle gateway challenges. for instance switch between gateways when one is down or having technical challenges • Easy to use backend for managing pricing, gateway switching More info will be supplied later.