Looking for a professional android app developer

Looking for a professional android app developer. I want to build a simple mobile app. It will be a simple money earning app where user will watch ads and earn money. The app will have the following functionality : 1. Paypal payment gateway. 2. One device one user system ( two account cannot be operated from a single device ) 3. There will one seperate tab for amazon affiliate. ( user can directly shop on amazon from the money they earned ) 4. If they shop on amazon in the app they will be rewarded separately. 5. The app will have more than one ad network. Other I will tell you in the project.... NOTE : The app should be made on ANDROID STUDIO only . Any third party app builder website cannot be used. ( I will provide you all the template that you will use in the app ) Thanks.