Build a Website

We want to develop our project in play-framework (Scala) but our existing technical team can not finished the back end we are looking to outsource a specific piece of functionality that we lack. We build part of the web site UI design etc ... **Marketplace kind E-commerce build in Scala web developing Play-framework akka, Cassandra, angular.js SPA single page app,Non-blocking I/o, play-framework . **And Payment Gateway Stripe or other... : **Build index searching with ElasticatSearch so user can search based on what their own location. That we can integrate into our existing applications. We like a technically sound but not customer facing application that. **Main technologies [login to view URL] log in and Post their Listing then process payment , once payment is confirm their Listings is post Real-time. **Ask the user can connect from different social,or can New Account if want on Users : has his own dashboard CRUD update listing, create, receive new 3 Gives the user a web screen to view (Dashboard and manage their setting CRUD method) . The application does not need to be pretty for customer usage, but needs to be technically sound and robust in the challenges involved in Syncing, can Scale easily, data to the database To apply, please let us know what challenges you think may be experienced in building this. Ideally needs to be delivered in next 10-15 days.