Design API, website, Facebook app, Android app and iPhone app for a simple game

We are a new startup that wants to hire developers to create a simple text based (with occasional graphs and pictures) stock market game. The game will have 5 parts: 1. API: Backend API based on node.js and [login to view URL] frameworks. The API must be able to accept requests from our frontend apps. 2. Web App: Online frontend app for our game. It must have an ability to buy tokens (in-game resource) via different payment processors. 3. Android App: Native frontend Android app for our game. This must be an independent app, and not just a port in of our website. It must have an ability to buy tokens (in-game resource) via in-App purchases. 4. iPhone App: Native frontend iPhone app for our game. This must be an independent app, and not just a port in of our website. It must have an ability to buy tokens (in-game resource) via in-App purchases. 5. Facebook App: Native frontend Facebook app for our game. This must be an independent app, and not just a port in of our website. It must have an ability to buy tokens (in-game resource) via in-App purchases. Please post your relevant experience in the field. A single group working on all these aspects will be preferred. Payment will only be done after complete testing of all the applications.