My core skills and experiences in iPhone and Android applications development are: - Native iOS/ Android ( Swift / Android Studio ) - Backend - Restful, JSON, XML - Social Integration - Facebook, Twitter, Google+ etc. - Version Control Tools - GitHub, BitBucket - Google Maps SDK, Apple Map Kit, Geolocation, GPS. Location Tracking - Payment System Integration Paypal, Braintree, Stripe - In-App Purchase , Advertisement, Push Notifications, Google Analytics