Alex Libby works in IT support. He has been involved in supporting end users for the last 15 years in a variety of different environments and currently works as a Technical Analyst supporting a medium-sized SharePoint estate for an international parts distributor based in the U.K. Although Alex gets to play with different technologies in his day job, his first true love has always been with the open source movement, and in particular experimenting with CSS3, HTML5, and jQuery. To date, Alex has written several books for Packt Publishing, including one on HTML5 Video and another on jQuery Tools.

Carlos Estebes is the founder of Ehxioz (http://ehxioz.com/), a Los Angeles-based software development startup that specializes in developing modern web applications and utilizing the latest web development technologies and methodologies. He has over 10 years of web development experience and holds a B.Sc. in Computer Science from California State University, Los Angeles.

He previously collaborated with Packt Publishing as a technical reviewer in the third edition of Learning jQuery and jQuery Hotshot.

Kaiser Ahmed is a professional web developer. He gained his B.Sc. from Khulna University of Engineering and Technology (KUET) and M.Sc. in Computer Science and Engineering from United International University, Dhaka. He is also a co-founder of CyberXpress.Net Inc. (www.cyberxpress.net) based in Bangladesh.

He has been working as a Senior Software Developer at Krembo Interactive and D1SH.COM CORP., Canada, for the last 2 years.

He has a wide breadth of technical skills, Internet knowledge, and experience across the spectrum of online development in the service of building and improving online properties for multiple clients. He enjoys creating site architecture and infrastructure, backend development using open source toolsets (PHP, MySQL, Apache, Linux, and others (that is, LAMP), frontend development with CSS and HTML/XHTML.

Natalie MacLees is a frontend web developer and UI designer, and is the founder and principal of the interactive agency Purple Pen Productions. In 2012, she published jQuery for Designers with Packt Publishing. She founded and runs the jQuery LA Users' Group, and together with Noel Saw, she heads up the Southern California WordPress User's Group, organizing WordPress meetups, help sessions, and workshops. She makes her online home at nataliemac.com.