A2Billing installed and configured on a Freepbx CentOS6 distro

We are looking for someone to complete the following -Install a2billing on our already setup fresh freepbx server running CENTOS6 -Setup 1 carrier that we will be reselling through a2billing/freepbx -Ensure that integration between the 2 platforms works and is as automated as possible -Full hardening of freepbx security from the default settings to minimize risk of hackers to our predefined passwords -The server will be situated behind a PFSENCE firewall and we will be creating particular rules inside pfsense to only pass required traffic We estimate this project should not take any more than 3 hours with consideration that we have already installed freepbx. We will need to discuss with the person integrating the solution their depth of knowledge before we release any server details and accept them to this project, we also need someone who is interested in further working with us as we develop our wholesale solution. We will also look at further consultations on any a2billing questions at a negotiated ticket or hourly based rate after the project has been completed.