Hi,
I have been developing games since last two years. Please have a look on reviews I have got from my previous clients :)
About your project:
I have developed few real-time and turn based multiplayer games. For these kind of game you will need following SDKs:
photon Unity networking: for multiplayer server.
playfab: for backend data management, player stats, player authentication, in game news, etc it's FREE.
One signal : this SDK is required for push notifications. It's a FREE SDK.
Other things may require, depends on your requirements.
Please contact me to have a detail discussion over this project.
Thanks for your time :)