Stefan Koopmanschap is co-founder of Ingewikkeld, and manages all PHP activities that Ingewikkeld does. He works as developer, consultant, trainer and overall PHP addict. His involvement in the different PHP-related communities allows him to talk to many people.
Stefan is a member of the Dutch Web Alliance. He is a regular speaker at conferences around the world, speaking on topics such as Symfony, Zend Framework, Refactoring, Documentation, Git as well as less technical subjects such as Open Source, Conference Speaking and Improving your team.