Collaboration application

We have a web conferencing application that is being re-designed due to poor programming in the past. We are looking for someone who can work fast yet create advanced tools in c++, java and PHP. If you have the ability to build things like Skype - quickly and without massive numbers of errors, please get in touch. YOU MUST BE ABLE TO PROVE THAT YOU CAN DO THIS THROUGH WORKING APPS OR PROTOTYPES. Our system is designed to allow screen sharing on PCs to one person or hundreds.