Sage intergrated application

I am looking for someone who can integrate sales orders, invoicing etc from a Sales Application of a Sales Agents Android Tablet into Sage 50 accounts. There will be multiple users, as many as 50, of the application.
We want the application to accept a incoming synchronisation from the sales agent, and integrate that information into SAGE, so no user input is needed
Also we need Sales Order, Invoicing, stock, sales agent commissions and other information including the customers order history and payment history to be downloaded to the Sales Agents Tablet, this needs to be able to integrate with the Sales application.

The Sales application for the Tablet is not yet developed and I am open to looking at someone with Android application development and SAGE Development experience to producing this product.