Required Skills and Experience + Probably about 7+ years of building iOS / Android (iPhone, iPad and universal) applications with relevant SDKs and Tools. + Expert experience building in complex native mobile applications that successfully shipped to customers. + Knowledge of native mobile design patterns (iOS / Android ) and experience building sleek, high performance user interfaces. + Expert proficiency in Objective-C/ Cocoa, XCode and Android. + High degree of proficiency in Xamarin framework. + Expert knowledge of REST Services, Web APIs. + Experience on web service integration (SOAP, REST, JSON, XML). + Experience of development using web technologies. + Good understanding of OO programming and design patterns. + Good understanding of HTML5, JavaScript, jQuery and Ajax.