John M. Wargo is a product manager, software developer, writer, presenter, father, husband, and geek. He spent more than 30 years working as a professional software developer, first as a hobbyist, then in enterprise software, and finally, for the last 15 years, in mobile development. He is the author of six books on mobile development and was a long-time contributor to the open-source Apache Cordova project. By day, he’s a principal program manager on the App + Cloud Experiences team at Microsoft. His website is johnwargo.com.