My knowledge regarding back end programming is very vanilla; so the best I can do is tell you my personal ambitions...
My goal is to create an interactive website and app that syncs together using real time data. So for example, if you were outside and updated your app, your profiles statistics on the website would update as well. Membership/social storage and real time data are the two major components of the site. It will end up being a Real time Data Social Media site and app. Think of it as if Weight Watchers and Facebook had a love child...kinda, but better looking.
I would also be interested in knowing which programming language is most secure as far as monetization goes. If I was to create some sort of monthly membership fee, would any of the programming languages best suit this need? If any.
Hope this was helpful!? Thanks!