Backend Developer using BAAS

We are interested in using a BAAS such as Parse to tie into our mobile apps that are Unity 3D based cross platform (iOS and Android ) games with social elements. Our assumption is that we will be using something like MongoDB for local storage. We need estimate of hours and price for development of: 1. Secure user authentication and identity management 2. Google and Apple Push Notifications 3. User behavior analytics 4. Encrypted User/Application/Report Store Databases 5. Social Media Management ( including emails, Facebook, twitter, and Google) Because our cloud connections will be used primarily to store data our assumptions are that we will be have less than 30 requests per minute and have less than 1 mill unique users.