Architecting, developing and delivering mobile solutions for iPhone/iPad, Windows Phone, Android, Windows CE and Windows Mobile 6.x. Specialties: Mobile applications design and development, Object Oriented design and development, Objective-C, C#, .NET, C++, JAVA

iOS Architect @ * Architected and lead the development of 4 releases of the iPhone application of a major retail chain. The application uses Urban Airship to send push notifications and messages, Omniture to track user activities, CoreData to save user related data, JSON to communicate with the API layer. As part of the second release, converted the iOS application into 64-bit iOS 8 application. * Architected and developed the entire Windows Phone 8 and iPhone mobile applications and participated in the development of an Android application, that communicate with Wi-Fi Access Points and configure them. * Architected and developed the framework for an iOS 7 enterprise iPad application of a pharmaceutical company. UI design is state of the art with video playing, multiple animations, custom fonts and image processing effects. * Responsible for the stabilizing of 2 iOS universal email applications: fixed memory leaks, crashes, and reduced memory usage. Re-designed the communications with the server to be on a background thread to allow fast processing of user actions for large email accounts. * Designed and developed a universal iOS 5.0 / 6.0 application for a private jet insurance company, that allows pilots to enter their flight data. Flight data is saved on device in SQLite database until securely transmitted to server. Mechanisms are built in the application to ensure that data is always recorded on server. Created multiple custom controls. Architected and overlooked the development of the RESTful JSON Web Services to insure that they are optimized, have all the business logic and deliver only relevant data to device app. * Designed and developed an extension to the existing universal iOS application of a small trading company to allow communications between customers and/or company employees, viewing / changing schedules during conferences. * Extended the existing .NET C# Web API REST JSON Web Services with the services needed to support the new iOS application functionality. From May 2012 to Present (3 years 8 months)

Tonya Momchev is skilled in: Software Development, Mobile Architecture, iOS, Objective-C, Web Services, JSON, REST, XML, Eclipse, Android, Windows Phone 8, Windows Phone 7, Java Enterprise Edition, JavaScript, C#