Bala Sundarasamy, graduated from the College of Engineering, Guindy. He has an extensive experience of more than 17 years in designing and building applications using Java and .Net technologies. He has performed various roles in technical functions and project delivery with some of the leading software consulting companies in India.

He has also taught numerous young developers to write good object-oriented code using Java and C#. He has proven expertise in training fresh engineers to adopt industry standard best practices and processes in software writing.

Russ Miles is the author of three bestselling books: AspectJ Cookbook, Learning UML 2.0, and Head First Software Development (all by O' Reilly Media). In particular, writing for the Head First series was an incredible learning experience in how to turn dry, technical subjects into great learning experiences; he has successfully applied these skills to the development of several successful courses and workshops.

He is a frequent speaker on many, wide-ranging technical subjects including the fun of being a self-proclaimed 'polyglot programmer'. A certified Scrum Master and, alongside the more specific technical coaching, he works with many companies as they come to terms with the fact that software development is ultimately about people.

He is the principle consultant and founder of OpenCredo, a high level software development consultancy based in London. As part of his daily activities, Russ writes for several publications (when he finds the time!) on topical software development subjects of the day.

Sylvain Hellegouarch, is a senior software developer at Ubikod, a company dedicated to innovative mobile solutions. He has a passion for open-source software and has created many Python projects targeting social communication based on the AtomPub and XMPP protocols. He wrote the CherryPy Essentials book, which was published by Packt Publishing in 2007, a hands-on book about CherryPy, a popular web framework. His interests are currently pushing him to the rich world of the semantic web, linked data and how people interact with each other.