19 years of IT experience designing, developing, deploying, and supporting networks, applications, mobile devices, peripherals, UI design & debugging, on iOS, OSX, Android, and Linux platforms. 10+ years of experience in iOS application development (iPhone and iPad). 5+ years of experience in Cross-platform technologies. 3 years of React Native experience. Developed multiple applications using Objective-C and Swift programming languages. Experienced in implementing Core Frameworks like SwiftUI, Combine, UIKit, Core Data, MapKit, CoreLocation, Core Graphics, ARKit and AVFoundation. Implemented different frameworks in XCode to handle UI tests and Accessibility tests. Experienced with AutoLayout to develop applications for multiple screen size using different constraint. Experienced in Reactive programming like RxSwift. Experienced of APNS (Apple Push Notification Service), popup alerts, badges, action sheet and integration of various social networking APIs like Facebook and Twitter into application. Skilled in engineering Mac OS X, iPhone and iPad applications using iPhone-SDK and objective-C. Worked on various frameworks and API’s including Core Location, Core Graphics, Media Player, Core Data, Map Kit, Core Animation, UIKit and creating own frameworks. Worked with COCOA design patterns, MVC, MVVM and other concepts like Delegation, Protocols and Categories. Experienced in setting up UISplitView, UIPopoverController and Custom Input Views on iPad. Experienced in implementing MapKit for iPhone and iPad applicationdevelopment. Used Jenkins for Continuous Integration (CI) for all builds and deployments. Developed applications by integrating Model-View-Controller (MVC), MVVM, Singleton and Delegate design-patterns in addition to Protocols, Categories and Extensions. Experienced in multi-threaded environment using GCD, NSOperationQueues, Performed unit testing and Performed profiling to check on the memory usage of the application. Experienced in creating and extracting data from database and displaying on iPhone using Realm andCore Data. Implemented SwiftUI in multiple applications to build all the apps. Experienced in implementing frameworks like CoreBluetooth, CoreNFC, and CoreMotion. Constructed Views using Storyboard file with Interface Builder and UIKit framework. Used NSURLSession for web services requests and fetch data in JSON format. Good understanding and experience of memory management concepts like ARC. Extensive experience in implementing both Local and Remote/Push Notifications (APNS).