Callshop Billing Software for asterisk

We are looking for programmers/developers who have experience in asterisk to build a callshop billing software for asterisk. The software should be able to show the realtime billing of asterisk clis , with options to import and export rates . The software should be standalone application not web based . We need a copy of software "asterwop" more more focused on callshop than callcenter. Asterwop is more focused on callcenter but we need the same fuctions but for callshop. We need to build the application asap. I can provide you more information if you are interested and have experience on asterisk.