Desenvolver um Software

We are looking for a ZenDesk App developer to implement a WSDL integration between a seller and a local transportation carrier. The webservice is well documented by the transportation carrier and has around 30 XML tags. On the ZenDesk side we need the following: the user clicks a button, the system shows a modal with required input fields and click submit, the app will consume the carrier webservices and shows the result back to ZenDesk (success - carrier tracking number / error - error description). It´s possible that the client will also need to store the tracking number on the current ZenDesk ticket.