A fter a few weeks of research I came to the conclusion that you can do responsive back-end coding, but I need to do more research on this to see what the best solution is. The way I see it working is depending on what device or screen is viewing the page the back-end system must display the components accordingly so it can load the correct format style sheet and images.
I'm still continuing my research so I will keep you up to date with my research.
I'm currently using Joomla as my back-end cms, and I'm trying to load certain modules and plugins depending what screen or device is viewing the pages.