cross platform chat app - android. iphone, ipad, blackberry

we need to build a cross platform chat app. features 1. phone number authentication by sms 2. roaster list 3. chat 4. group chat 5. file transfer 6. video/audio record and tranfer look at kakao and whatsapp only bid if you have done similar....you know nodejs, socket io, openfire, xmpp, ejjabered etc no need to write big cv, just send link of similar app and we will interview you.