Finalize functions for react-native social media app

We are looking for a freelancer to finalize a few functions for an app which we started with react-native for iOS and android . what needs to be done is: - program users login & transition to next screen - Finalize screen where the user can add elements to the screen by clicking on a button and the user should be able to choose an image which is then added to the button where he clicked - The user needs to be able to edit each added element and to give it a name and a few more details - if there are more elements than the screen can hold the view should become scrollable - when the user starts to add elements to the screen, a new document should be created containing the info on the added elements and the detail infos on each element. - this document should be stored on the web so that when a new user is creating a new document it is checking back with the server if the document with the same name exists and if yes, both users can make changes to the document and they are being saved on the web then when this section has been finished we will move on to the next section of the app and would be happy to work with a freelancer on a long term basis for this project. many thanks !