Joshua is a web developer who currently lives in South Bend, Indiana. He has been a web developer for five years. He has built sites using many different languages including PHP, Python, JavaScript, and C#, although, if asked, he would prefer using Python and JavaScript. These languages have led him to use different MVC frameworks such as Django and .NET’s MVC.

Joshua also has used JavaScript on both the backend with Node.js and the frontend using many different libraries. These include Backbone, React, jQuery, and plain old JavaScript.

He currently works for a health care organization writing web sites in C#. This does not allow him to utilize the latest flashy browser technologies, but it does enforce good development skills such as maintainability and scalability.

This is his second book and he does post somewhat regularly on his blog at http://ejosh.co/de.

Talha is a Lahore-based, young, passionate web developer with 5 years of experience in software development. He is experienced in developing interactive websites and web applications using PHP, MYSQL, and .NET suite along with HTML, CSS, and JavaScript. He has hands-on experience on JavaScript Libraries such as JQuery. He teaches web development and is also active on programmer forums such as StackOverflow. He occasionally tweets @alphaprofile. His love for web technologies pushed him to write this book.

Ricardo Zea, originally from Medellín, Colombia, is a passionate and seasoned Full-stack Designer now located in Dayton, OH (USA). He is always looking for ways to level up his skills and of those around him. Constantly wondering how things are made on the Web, how they work, and why they work the way they do have made Ricardo a very technical designer, allowing him to explain to others the intricacies of design and the technicalities of the Web in ways that are very easy to understand.

With a Master's degree in Publicity and Advertising, having a deep passion for understanding human behavior complemented with a fierce competitive PC gaming hunger have allowed Ricardo to "switch" from the creative side of the brain to the rational side very easily. He's capable of visualizing and creating technically sound web and mobile designs that are responsive, perform well, and convey the proper message through design.

Ricardo is the author of the book Mastering Responsive Web Design by Packt Publishing. He's the organizer of the CodePen Dayton meetup group. He's a member of the leadership team of the Dayton Web Developers group. An active member of the UX Dayton meetup group. He's also one of the first members of SitePoint's Ambassadors program. He is the author of the monthly web design and development, Level Up! Newsletter. He was also a technical reviewer for the books Sass and Compass, Designers Cookbook and Sass Essentials by Packt Publishing. He is also a live, one-on-one expert advisor on Wizpert.com.

For several years, Ricardo was also a Flash and CorelDRAW professor at different universities in his home country, Colombia.

Ricardo has 15 years of experience in Web Design and 20 years of experience in visual and graphic design.

You can contact Ricardo through the following links:

Personal website: http://ricardozea.design

CodePen: http://codepen.io/ricardozea

Twitter: @ricardozea

Wizpert: https://wizpert.com/ricardozea