FdG multi-user

Project Description:
We are looking for a PHP/MySQL developer with Ajax and Jquery experience. We need you to help us further develop the main features of a project which will change our business for ever. The base of the project is already solid, we need you to make it social.
You will be supervised by a brainiac with 22th century ideas, and an expert in database management, linux and virtualization.
The project involves a bit of reverse engineering to understand how the current code work since we are starting from an existing application which has been designed for a single user. We want to turn it to multi-user and this is partially done already. Then we want to make sharing of data between users possible.
We are then going to need to have a system of voting on the data and validating the data according to how much votes it gets.
Then we will have a bit of social media integration but that will be in a second time.
I guess you are not looking for a full time job, but it may become possible if the project is as successful as we hope.
In the future, and if the project is successful enough that we can invest more money we will turn to noSQL and maybe couchdb or aws or whatever is appropriate since this project should generate a lot of data.
Our budget is limited for now but the potential is limitless. We are attacking a market with huge opportunities and if you accept to work to the best of your capabilities without counting hours, we can make great things together.