An Android developer is required

The application will interface (in the login screen) with users db in my server and will authenticate with the db. If the authentication is wrong - a message will appear, saying it's wrong and denying user access. If the authentication is OK, the user will be successfully log in and the application will begin running. The application will work in the background and will display in rotation image\flash files on full-screen in a logic way that will elaborated later. * The images that will be presented to the user will be taken from the db by binding several different tables with the information about the images wished to be displayed