Zencart Modification & Mainenance

I have an operating e-commerce site that is built on the Zen Cart platform with some customization. I need someone who can take a look at the modifications, understand them analyze them and then tweak the processes to improve the site execution of orders. This will be an ongoing project and I need someone who will be available to make modifications and do small jobs going forward. I pay per project, but I want someone familiar with my site and who can keep me functioning on my Zen Cart platform with the ability to upgrade my Zen Cart as needed. If you are not good at Zen Cart, do not contact me. This is not a hobby for us and all website work must be done in a professional, organized manner. Being proficient in javascript will also be helpful for some form creation. Let's get started and build a relationship...