Now i am working on native android and ios programming. Also i had certificates for Oracle Database management, IOS Development with Swift, Android Development with Java, Database Management in Sql variants, Layered architecture with C#. Before I had experience with Delphi (object pascal and c#), visual studio c# for windows programming, Php zend framework for website programming and i had sql variant (mysql, mssql, firebird etc...) database programming for both platforms.