Shoptimix is a platform developed to facilitate online grocery. AS CTO of the company I developed the iOS app, written in Objective-C, and the backend, written in Grails 3. I collaborated and supervised the development of the Android Java, written in Java. I put together an internal backend which we used to generate a product catalogue. Moreover, I was responsible of the companies website as well as other scripting utilities. We used Geb a lot.
That it is to say I was involved in the creation of the product from the ground up.