Dating App for Android & iOS (Dart Expert) — 2

We would like to create an application in Dart preferably, for Android & iOS devices. It will be a dating application, similar to Tinder.
The screens will be developed in Dart by us but the candidate should be an experienced developer in Dart language to finalise whatever is needed and bring the application to life.
Need of a database also with services on a hosted server.
In addition, a web-based system will be needed for Monitoring and Controlling.
Finally, we will need support for hosting the application and for whatever feature arise.
We are looking forward to find the best candidate to march towards the end.