RhoMobile developer

I am looking for someone who is familiar with coding in ruby on rails. i am looking to develop 4 mobile apps (iphone/ipad, andriod, blackberry, symbian) through the use of rhomobile. for those not familiar with this platform it is a tool which allows coders to code in html, java, ruby on rails once and its deploy the coed to create all 4 types of apps. therefore code once and deploy on all 4. use of rhomobile, phonegap or titanium would be beneficial. the app will be a ecommerce app drawing an xml feed from my site and creating an shop within the app.