Dionysios is a senior web developer at NTUA and a freelance consultant, focusing on Rich Internet Applications, Web Application Security, Mobile Web and Web Services. He's the co-author of "Pro HTML5 and CSS3 Design Patterns" by Apress and an open web advocate. Going back and forth between server- side programming and UI design for more than a decade, he has been involved in diverse software projects and contributed to different technical publications. Dionysios also blogs, tweets and firmly believes that "inside every large post is a small post struggling to get out".