Alexandre Magno has worked for 10 years as a web developer, and is currently working as a software engineer at globo.com. He is a very active contributor in the open source community with plenty of projects and acts as a jQuery evangelist and a responsive design missionary. As a multidisciplinary developer, he has strong experience in a wide range of server-side frameworks and CMS such as Ruby on Rails, Django, WordPress, and exploring Node.js. He has developed many libraries that are widely used at globo.com, and was one of the first developers to develop mobile websites with a responsive design in the company he worked at. He is an active contributor of Twitter Bootstrap and the creator of one of its branches, the Globo Bootstrap, which is the first translation of Bootstrap to Portuguese, and also developed some components used in globo.com. He is very passionate about web development, and he writes about it in his blog at alexandremagno.net. He has already contributed in the publishing of a web magazine about jQuery UI and has even made presentations in some technical events, such as the International Free Software Forum (FISL). Writing this book for him is a great step further, after these achievements. Besides technology, he is a musician and song writer too. He likes to remember every moment of his life with a music lyric. At this moment, for example, the verse would be We are the champions, my friend.