Unity developer for mixed reality mobile game experience.

I need a developer to help me with a new Unity AR Mobile Game. I am designing and architecting this project and need someone deeply familiar with full stack Unity that can help me implement features. At first we will mostly be developing a multi user menu driven shared AR experience using Photon Networking. We will probably need to implement oAuth for login that maps to users in our database. We will work with world reconstruction and semantic maps to place objects in the world and allow other users to see them. For now we will just prototype with basic shapes but we'll work with an artist later to add art assets, sound FX and VFX.