Jean-Charles (JC) Gillet is a seasoned business analyst with over 7 years of experience with SQL at both a large-scale multinational company in the United Kingdom and a smaller firm in the United States, and 5 years of Tableau experience. He has been working with Tableau and SQL for multiple years to share his expertise with his colleagues, as well as delivering SQL training. A French national, JC holds a master's degree in executive engineering from Mines ParisTech and is a Tableau Desktop Certified Associate. In his free time, he enjoys spending time with his wife and daughter (to whom he dedicates his work on this book) and playing team handball, having competed in national championships.

Fabian Peri's interest in decision analysis started after joining his first fantasy basketball league in 2006. His love for data analysis led him to pursue an MBA in information systems at the University of Tulsa, and then an MSc in predictive analytics from Northwestern University. Since graduating, he has primarily worked in risk analysis and management for companies such as Amazon, GE Capital, and Wells Fargo. He is currently focused on using visualization to explore and interpret vast quantities of data.

Radhika Biyani is currently working as a recruitment insights analyst with Amazon. Before this, she worked as an analytics consultant with Version 1, where she consulted on several large-scale BI and analytics projects with clients across various industry verticals such as HR, finance, utility, supply chain, and more. She holds a master's degree in business analytics and has many certifications, including Tableau Qualified Associate. She enjoys attending meetups and is an active member of many meetup groups, including Tableau User Group Dublin.

Gleb Makarenko began using Tableau in 2018 and quickly fell in love with how intuitive and easy to use the software was. He was able to easily adapt to its interface and create powerful visualizations. That is when he decided to get certified on Tableau software in order to receive proper credentials that he could use on his resume, as well as learn about the intricacies of the software that he wasn't using at the time. With a bit of effort and research, Gleb was able to complete the examination. And he recommends the same to anyone who is serious about working with Tableau.