Android Push Notification Library/App

We're looking for an android developer that is familiar with push notification technolgoies. Currently we have a generic app that is just a webview that loads a website, we would not be opposed to a complete rewrite if it made things easier. Either way, we will make the source code of this current app available to give a better idea of where we're at. Upon the first time loading the app it posts some device information to a web server of ours. We want to add to this, android market referrer tracking to also pass over ID's that we pass through the market to track app installs. We also have push notifications enabled via urban airship, and we're interested in moving to the xtify service utilizing their SDK to send push notifications out via XMPP (though we're a little unclear on what the requirements are on our end to utilize this method). We're not interested in using Google's C2DM. We would be open to using other messaging protocols if we could achieve our desired results provided that there was minimal setup involved. We would also like to have the ability to show a different icon for the push notification depending on a key that is sent with the push notification. If this is something you're interested in, feel free to place a bid and we'll discuss it further. We're interested in finding a longer term partner that would be willing to expand upon this and other projects of ours in the future. Thanks