Theo Pack is a software engineer with several years of experience in developing frontend and backend applications. He completed his M.Sc. and has been working at Cologne Intelligence GmbH, a consulting company in Germany, since 2009.

Theo is passionate about technology and likes to master new programming languages.

You can read his blog at http://furikuri.github.io or follow him on Twitter at @furikuri.

Eric Pirard is a Java developer from the past few years. He is interested in the new technologies that help developers in their jobs to satisfy the customer's requirements as quick as possible. He also likes to help his friends or colleagues in solving their problems and progressing in their projects if he can.

As there are a lot of things to do in addition to his exciting job, if technology can help to solve customers problems as soon as possible, he is very interested. In this way, he has more time to spend with his family, enjoying sports, travelling, in short, enjoying life.

Geoffroy Warin has been programming since he was 10. He is a firm believer in the software craftsmanship movement and open source initiatives. A developer by choice and conviction, he has been working on the conception of enterprise-level web applications in Java and JavaScript throughout the course of his career.

He also teaches courses on Java web stacks and is a Groovy and Spring enthusiast.

You can read more about him on his blog at http://geowarin.github.io and on Twitter at @geowarin.

Ricky Yim is a passionate software engineer who has over 15 years of industry experience. He is a firm believer in using test-driven and behavior-driven development and agile practices to solve problems. He takes a flexible approach to software delivery and applies innovative solutions. He is currently the Delivery Manager for DiUS, an Australian technology services organization, http://www.dius.com.au.

You can find out more about him at http://codingricky.com, and you can follow him on GitHub at http://github.com/codingricky and on Twitter at @codingricky. He is also an avid runner and you can read about his adventures here at http://runningricky.com.