Expert Developer Javascript and VOIP

We are looking for an expert developer that has past experience working with the Companies API or SDK. This developer must have extensive experience in javascript. Plus have knowledge with VB6, Nodejs and .Net is preferred. The developer must have past development experience working with one of these companies API or SDK (Twilio, Plivo, Jive phone) and must be willing to show proof and examples of work that you have done in the past. If you can not show us do to NDA then do not apply. We want to see real world example to make sure you have the experience and know-how of this project. We are looking for that developer to build an DLL to work with our existing program. See the attached document below. Below are all the documentation for the 3 companies. [login to view URL] [login to view URL] [login to view URL] After we discuss this project with the developer and see their experience level. We will choose the developer that will suits this project the best. We will tell you what company we will use to implement and use there API or SDK. Right now our first choice is Jive phone but we might be open after we talk with the developer. We might even have the developer, develop on all 3 plate forms if we feel that developer has the know how. Good Luck Aaron