Don is one of the engineers behind Yelp's Android app, responsible for building nifty features and tackling scaling issues to our 10M+ users. He has a passion for making complicated interfaces simple, whether the interface is for front-end users or for fellow developers. He's working on simplifying the way views and models are organized on the Yelp app. Prior to Yelp, Donald has worked at Facebook, Microsoft, and RIM (BlackBerry).