I'm an experienced frontend developer (Backbone, Coffeescript) and designer with little to no skills concerning backend stuff. I want to build a sideproject without having to worry about setting up a server or maintaining a database. The project has to be as lean and less timeconsuming as possible but being able to implement some kind of user authentication and an advanced tagscheme will be important.
I'm considering using a backend as a service platform like http://parse.com or http://stackmob.com but still wonder if there are better ways to implement the project I have in mind. Given my description of the situation: Which platform / framework / stack would you recommend?