Experis is currently hiring for an iOS Developer that must sit in New York, New York. Please review the job description and apply accordingly. Join a team of talented developers working in a very fast paced environment building innovative solutions. Become an integral part of new Citi Corporate mobile team. Develop mobile solutions across iOS (iPhone, iPad), Windows Mobile, Android and RIM PlayBook using cutting edge technologies such as native APIs, HTML5, frame buffering and leveraging mobile application frameworks. Immediate need is for iOS development; however opportunities exist to expand to other mobile platforms. Need to have: iOS developer RESTful , JSON / XML / SOAP Web Services iOS application performance tuning Solid Knowledge of MVC, Singleton, KVC(KVO), Delegate Design Patterns; Objective-C Memory Management; Multithreading, Concurrency, Blocks Programming Knowledge of security and identity management solutions such as SAML, OAuth, certificates and encryption Above things are compulsory. Nice to have rest of job description. Technical Proficiency Practical experience building iOS applications for iPad, iPhone Expert knowledge of Objective-C , UIKit, Core Data. Solid Knowledge of MVC, Singleton, KVC(KVO), Delegate Design Patterns; Objective-C Memory Management; Multithreading, Concurrency, Blocks Programming Experience with iOS application performance tuning (e.g. Instruments). Experience with RESTful , JSON / XML / SOAP Web Services Knowledge of Unix / Scripting (shell, python, etc.), server-side development (Java, PHP, etc.) Familiarity with Source Code Management systems such as SubVersion (SVN) or Git; build tools like Ant, Maven, Hudson Experience working with QA and testing tools for mobile applications Bonus Points Knowledge of enterprise mobile development, a plus. Specifically developing secure mobile applications, integration with enterprise applications and infrastructure. Knowledge of security and identity management solutions such as SAML, OAuth, certificates and encryption Experience designing highly interactive mobile user experiences by developing wireframes, prototyping functionality Knowledge of HTML5 mobile development as well as hybrid mobile development (iOS + HTML5) Knowledge of mobile development frameworks such as JQuery Mobile, Sencha Touch, IBM WorkLight, FrameHawk, etc. Knowledge of Objective-C Runtime APIs, C Programming (memory management, C standard library, gcc, gdb) Knowledge of Automated testing / Unit Test for iOS applications