Our team doesn't have any knowledge regarding list of AdWords API certified partners nor if a certification of such exist. The support that our team provides is only limited to technical questions about the AdWords API and how to utilize its various features.
As mentioned earlier, you may create a new thread and specify any technical questions you have for a particular AdWords API service or
report type and we'll gladly assist you.
In addition, if you need assistance with development using AdWords Scripts, then you may contact their team via
this link.