Android Developer neeed for long term project

Hi Looking for an Android Developer to work on completion/refinement of an android app created by us internally earlier for one of our ecommerce projects. Right now initial scope of work is to work on refinement of he current features of the app, but the work is long term and there are many new features planned in the app going ahead. Additionally, there are few more requirements for newer apps to be created. So looking for a good and capable freelancer to work with me on regular basis. Selection of freelancer will be based on the past experience (including creation of good UI android apps, push notifications, google maps/gps), immediate/long term availability and of course competitive rate. Freelancer does not need to code web services. The JSON based webservices will be provided by me. Please do share your profile along with sample set of work done. Thanks