1. Strong Cocoa and Objective C concepts.
2. Should have hands-on experience with design and implementation of applications on iPhone\iPad
3. Understanding of configuration aspects of iPhone and iPad devices - Apple configuration utility, configuration profiles etc.
4. Prior experience developing high performance personal and commercial applications with Push notification, location based services, social features as well as interfacing with existing system with JSON or XML
5. Good user interface development experience on Mobile Devices Application development