E-Commerce Website developer (BigCommerce or custom)

Looking for a web developer to create a subscription based website either using BigCommerce, a custom developed site, or any other platform that allows a subscription based model. The website must allow subscribers to to sign in and be charged monthly. The website will have digital products as well (i.e., videos, audio files, and pdf documents).

One example of the type of website I am looking to create is www.founderfly.com

I am looking for someone with experience building a similar website.