Jisse is the co-founder and lead developer of Yireo - creating and maintaining the various Yireo extensions for Joomla!, Magento and MageBridge. He is also author of the book Programming Joomla Plugins.
Ruben owns his own design-studio ZoonStudio and is in charge of all design work for Yireo. He has helped develop the original graphical art for Yireo, and works on continuously upgrading the Yireo design.
Janet runs her own office support agency and helps out Yireo with administrative tasks as well as organizing trainings and events. Thanks to her help, things run smoothly with Yireo.
Ruud van Zuidam
Ruud (@allrude) is a freelancer with his own company WebsiteConcepts focusing on frontend development - Grunt, Gulp, CSS preprocessing, PHP - in both Magento and Joomla. He works regularly on Yireo projects.