Worked on an iPhone and iPad Application. I performed the design, architecture and development of various new functionalities within the application. Performed upgrade and migration from iOS 8 to iOS 10. Assumed key roles in all phases of project life cycles, project planning, Performed system analysis, application architecture design, coding and implementation of iOS Applications. Skilled in code optimization techniques and analysis time profiling for the apps for iOS in Xcode. Successfully detected and corrected memory leakage problem, and optimized the Objective-C code for to significantly improve battery life, memory usage and CPU consumption issues. Migrated iOS application from earlier iOS versions to the latest iOS. Provided mentorship and guidance to junior developers. Reviewed existing app design and architecture and identified opportunities for upgrading to newer technology platforms and provided recommendations for an application migration strategies and roadmap to enhancement of existing iOS apps.