GroupJive plugin

Hi I am building a site with GroupJive. I need a plugin to handle CrowdFunding - similar to many current crowdfunding sites like [login to view URL] as an example. I need a Crowdfunding plugin to GroupJive built to handle the bidding, transactions, statusbars and other related data, just like a reverse auction function. Best would be if you have some kind of proven record working with plugins for GroupJive, understanding of Crowdfunding and that you can work fast and be very precise and care well about details. Best Regards Johan Niklasson