Lorna Jane Mitchell
Lorna is an independent web development consultant, author and trainer based in Leeds, UK. Her books include "PHP Master" and "PHP Web APIs", and she is also published regularly at a number of outlets including netmagazine and of course her own blog lornajane.net.
Lorna has spoken at technical events around the world on technical topics around PHP and APIs, regularly delivers technical training sessions and is also active as a mentor with PHPWomen.org.
She is an experienced event organiser and speaker, having hosted the Dutch PHP Conference and co-founded the PHP North West conference and user group. In her spare time, she leads the joind.in open source project, which provides a platform for real-time, public feedback at community events.
Rafael Dohms is an experienced PHP Developer, Evangelist, Speaker and Contributor. During his years of experience he has become an active member of the community and founded 3 User Groups. He moved to the Netherlands explore a new market and share his passion for code quality and innovation. In his spare time he also helps manage the AmsterdamPHP User Group, amongst other projects.
Twitter - rdohms
Website - http://doh.ms/
Sebastian Bergmann is one of the leading forces in PHP development and PHP quality assurance. He spearheaded the actions that made it possible for PHP to become a platform for large and complex projects. Companies and PHP developers around the world benefit from tools that he created.
Sebastian is a co-founder of thePHP.cc and a pioneer in the field of quality assurance in PHP projects. His test framework PHPUnit is a de-facto standard. He is actively involved in the development of PHP and responsible for creating a wide range of tried-and-trusted development tools.
Twitter - s_bergmann
Michael has been an active member of the Joomla! community since his first install in 2010, participating in the Bug Squad; contributing code and direction to the CMS, Framework, and Issue Tracker; and has been a member of the Production Leadership Team since 2012. His high standards for code and focus on automated testing have raised the overall quality of Joomla's code and helps ensure a stable and quality product for every Joomla user.
When he isn't working on core code, he can be found working on his own collection of code, opinionating on Twitter, or out in the real world enjoying the sights and sounds of wherever he may be at the time.
Twitter - mbabker
Website - http://www.babdev.com/
David is committed to open source development and serves as both the Community Manager for Joomla as well as a member of the Production Leadership Team. He is one of the CMS maintainers and also one of the framework maintainers. He is always looking for other ways to help developers and end users. In his free time David writes for the Joomla Community Magazine, is a part of the bug squad, and the security strike team.
Twitter - dbhurley
Website - www.joomla.org
Marijke Stuivenberg got involved in the joomla Community since 2007. She translates the Joomla core in Dutch and is a member of the Joomla Translation Coordination Team. She is also participating in the Joomla Bug Squad as a tester and helps testing security issues in the JSST.
As one of the co-founders of JoomlaCommunity.eu she is very active in the Dutch Community on many areas. She leads the Dutch Translation Team which maintains the Dutch Translations for Joomla and several extensions.
Currently she is filling the role of Secretary of Stichting Sympathy, the Dutch foundation that supports Joomla in the Netherlands and Assistant Secretary of the board of Open Source Matters.
Marijke is a musician by profession, in daily life she teaches young and old(er) how to play the Saxophone.
Twitter - atMarijke
Website - www.marijkestuivenberg.eu