looking for senior mobile developer(build me app like airbnb/uber)

We want a native android app which should be able to run on play store and should comply with the Google play store policies. The app should be developed in (Native Android)Java or Kotlin or flutter. You can choose the language you are comfortable in. The database should also be of your choice but please keep in mind that we need to scale this application in the future so the database should also be scalable. We will provide you with the mockups and you will be responsible for designing the app screens based on those mockups. Which will be simple, we don't expect high resolution design from you however backend functionality is of more importance. The basic functionality includes: - user registration form / user login / manage profile (profile settings) - Show Map to the users based on their current location - Search address and show it on the map (There might be filter for getting the user that are available on the specific time and day) - Show other users on the map - Select user o Show user rating o Go to user profile o Option for DM o Option to book (calendar that contains date and time to book) Example: We want to use the functionalities of AirBNB/UBER in our app. Where we have two types of users. 1. User A: that provide service 2. User B: that avails the service Case Scenario 1: If user A logins he can update his settings information e.g. his name, address, availability information on calendar (like airbnb calendar but we also need time on the day as well for availability) Case Scenario 2: If a user B login in the first screen he will see the map where he can see the type of User A around him. User B can also see the people based on the availability calendar. User B can also search based on the different address. Case Scenario 3: User B selects User A, select the available time on the calendar and book the User A. User B can also send DM to User A for confirmation. Case Scenario 4: User A can checks its booking, manage bookings etc Case Scenario 5: User B can also check its bookings and manage the bookings etc. After managing the bookings it will updated accordingly