Ruby on Rails 4 with Ember.js (long-term)

We have a Rails 4 app, Ruby 2, with Ember.js used extensively. We need to hire someone long-term for 6+ months full-time. We will need to talk to your references on the phone and you must have excellent references. With your response: 1. Please provide three best Ruby of Rails sites your have developed. If you submit a non-Rails site, you will be disqualified. 2. Please give us a sense of your experience with Ember.js 3. Please give us a sense of your experience with payment systems like Balanced and Payoneer.