Working with RRD Tool, Zenoss and WHMCS

We are trying to integrate our monitoring system ([login to view URL]) with our billing system ([login to view URL]). This will require working with RRD Tool to get the graphs to the client and we will also need to work with the API for service monitoring and email alerts. The Zenoss API uses JSON and the billing system also have JSON capabilities. I have attached the API from Zenoss's website. I'm looking for serious people only, anybody who will submit a generic interview request will be REJECTED. I need somebody that will look over their API and determine if they can integrate it into the WHMCS billing system. Should be a day or two of work if you have previous experience with Zenoss. I'm flexible on payment, but I do require somebody that can work on this right away. Thank you.