I have implemented fully dedicated eCommerce from scratch, with self-made CMS, ordering, cart modules etc. I'm still its administrator and I'm responsible for adding new functionalities to it.

Technologies used are PHP, CodeIgniter, JavaScript and Ajax.

The majority of work has been done in PHP, but due to Non-disclosure Agreement I cannot include screenshoots of the CMS itself. I can tell however it's very similar to the PhpMyAdmin, but more customizable.