Xamarin / Cross Platform App Developer

We are looking for a Xamarin cross platform app developer to quickly develop an app (1 day as it is very simple): - user registration + sign-up with social media AWS Cognito (which provides user authentication) - game (very simple very small CODE WILL BE PROVIDED + DETAILED CONCEPT) - invite users from your contacts (phone + social media) to play the game with you - the person invited can accept the "battle" or refuses if refuses loses points. - with each win user gets points. - very simple profile page to list name and points