Karen Kilroy is a highly experienced developer, administrator, and instructor. She is a Magento-certified Front End Developer. As a hands-on developer and systems administrator with more than 25 years of experience in IT, which includes 20 years in web development, Karen has focused primarily on Magento for the past 7 years. Currently, she is employed at Amplifi as a Magento technical lead and works on several well-known commerce sites.

Karen got her start in Magento at a direct marketing company selling EdenPURE Heaters (edenpure.com), a site that generates millions of dollars in sales. Additionally, she was a courseware author and instructor for Magento's official training arm, Magento U, between 2010 and 2014. Karen is also a reviewer of Mastering Magento, 2nd Edition, Packt Publishing.

Prior to becoming involved with Magento, she customized LAMP content management systems, such as Joomla, Drupal, and WordPress. In the early days of web development, Karen led her own company, where she employed 20 developers doing Java and Lotus Notes/Domino work for large clients.

In her spare time, she is also a professional dragon boat coach and steersperson.

Pankaj Pareek is a certified software professional who has expertise in Magento, PHP, and other frameworks. He has provided his professional services in this field for more than 7 years.

A true professional, Pankaj works with the motto that knowledge increases when you share it with others. He is a person who has explored different aspects of the software field suo moto. Pankaj is a quick, curious learner who received various recognized certifications in the IT field in a very short span of time, namely Magento Developer (2013), Magento Solution Specialist (2015), and Zend Certified Engineer (2014).

David Parloir has been a freelance Magento developer since the first version was released in 2008, and through this, he has also been the lead developer for several large global projects. Prior to this, David worked for several companies that focused on the development of e-commerce websites and even worked as a teacher of Magento for a short period. He is a self-taught developer who sees web development as more than a job—he sees it as a passion. David considers himself a craftsman, keeping up to date with the latest trends in this area while balancing the new skills he develops, with a desire for his code to be efficient, simple, and elegant.

Marius Strajeru is 32 years old and finished as a faculty of computer science in Iasi, Romania, in 2006. Since then, he has worked as a PHP developer for various software companies.

Marius' area of expertise is Magento; he has been working with Magento since version 1.0 came out in 2008. He started looking at Magento 2 as soon as he heard that the source code is available in a dev version.