Gert Jan Feick studied informatics (language, knowledge, and interaction) at Technical University Enschede (NL). He started his career as a project manager at a medium-sized software development company, specializing in requirement analysis and project management. From 2005 onward, he was responsible for building up a company in the areas of software development, reporting and visualizations, and analysis. In 2011, he moved to Germany and became a management consultant at Infomotion GmbH, where he was responsible for the team that works on self-service and Agile BI as well as reporting and analysis.

He regularly contributes to online forums (including the Qlik Community), speaks at conventions, and writes articles. You can follow him on Twitter at @gjfeick, where he tweets about QlikView, big data, self-service and Agile BI, data visualization, and other topics in general.

Miguel Ángel García is a Business Intelligence consultant and QlikView Solutions Architect. Having worked throughout many successful QlikView implementations, from inception through implementation, and performed across a wide variety of roles on each project; his experience and skills range from presales to applications development and design, technical architecture, system administration, functional analysis, and overall project execution.

He is the co-author of QlikView 11 for Developers, Packt Publishing, which was published in November 2012, and its corresponding translation into Spanish "QlikView 11 para Desarrolladores", published in December 2013. He also worked as a technical reviewer for several other QlikView books.

He runs a QlikView consultancy, AfterSync (www.aftersync.com), through which he helps customers discover the power of the Qlik platform.

He currently holds the QlikView Designer, QlikView Developer, and QlikView System Administrator certifications, issued by Qlik, for Versions 9, 10, and 11.