Hi there
Can you tell me the end goal of the extension that you want to develop, and send me the list of features that you want to be implemented into this extension? What is it about? I cannot promise nor tell you if I could do the job without knowing that basic info, so, feel free to hit me up so we can talk more about this. I am very responsive.
Also, when do you plan to start and when is the deadline, if there is one?