Mobile App Payment Gateway

I need a developer who can embed the CBL payment gateway directly into my mobile app and make it work flawlessly on both iOS and Android. The only payment flow I care about right now is recurring billing—users must be able to start, manage, and cancel subscriptions without ever leaving the app... (Budget: min $50 USD, Jobs: Android App Development, Android Wear SDK, API Integration, iOS Development, iPhone, Mobile App Development, Payment Gateway Integration, PCI Express, PHP, Visual Basic)