Hernán G. Resnizky is a data scientist who is actually working as a freelance consultant in Argentina. He has worked for national and international clients from diverse industries in different domains related to data handling and analysis, such as data visualization, text mining, machine learning modeling, and so on. For over two years, he worked as a senior data scientist for Despegar (http://www.despegar.com/), the leading online travel agency in Latin America.

Regarding his academic background, Hernán has completed a licentiate degree (a five-year study program that is equivalent to a bachelor's and a master's degree) in sociology from the University of Buenos Aires. Also, he has completed his masters of science courses in data mining from the same university.

Hernán has a blog, www.hernanresnizky.com, where he writes about data science and R-related topics. Also, he has reviewed Web Application Development with R Using Shiny for Packt Publishing in the past.