Federico Kereki is an Uruguayan Systems Engineer, with a Master's degree in Education, and more than 30 years of experience as a consultant, system developer, university professor, and writer.

He is currently a Subject Matter Expert at Globant, where he gets to use a good mixture of development frameworks, programming tools, and operating systems, such as JavaScript, Node.JS, React and Redux, SOA, Containers, and PHP, with both Windows and Linux.

He has taught several computer science courses at Universidad de la República, Universidad ORT Uruguay, and Universidad de la Empresa. He has also written texts for these courses.

He has written several articles--on JavaScript, web development, and open source topics--for magazines such as Linux Journal and LinuxPro Magazine in the United States, Linux+ and Mundo Linux in Europe, and for websites such as Linux.com and IBM Developer Works. He also wrote booklets on computer security (Linux in the Time of Malware and SSH: A Modern Lock for your Server) and a book (Essential GWT: Building for the Web with Google Web Toolkit) on GWT programming.

Kereki has given talks on Functional Programming with JavaScript in public conferences (such as JSCONF 2016) and has used these techniques to develop internet systems for businesses in Uruguay and abroad.

His current interests tend toward software quality and software engineering--with Agile Methodologies topmost--while on the practical side, he works with diverse languages, tools and frameworks, and Open Source Software (FLOSS) wherever possible! He usually resides, works, and teaches in Uruguay, but he is currently on a project in India, and he wrote this book in that country.