Front end developer with experience of Shopify custom apps

I'm looking for a talented and reliable developer to work on a custom application I have developed for a Shopify business. It's a 3D jersey customiser tool. The app is functional but needs further development. The original developer is no longer available so I need someone that can pick up where he left off and work closely with me to further develop the app functionality. If you can demonstrate that you have excellent communcation skills, have worked on custom Shopify apps, and can work quickly and accurately I'd love to hear from you. I can give you a full spec if we engage.