Desenvolver um aplicativo para o Android

I am seeking an Android developer to fix an existing app. The app is a game containing a database of test questions (much like trivia). The app provides a ramdomized set of questions to the user and then scores (and saves previous scores). What I want the developer to do: add questions to this database ( I will provide them); change some of the screens in the app (I will provide the screens). The app is in Portuguese (Brazilian).