Sergey Grinev is an experienced software development and QA engineer focused on building reliable quality processes for Java platforms. He started to work in this area during his employment with Oracle, where he was responsible for JavaFX quality. Since the past few years, he has been working for Azul Systems on the quality of their custom JVMs.

Also, Sergey enjoys teaching people, presenting on various Java conferences, giving lessons, and answering Java-related questions on http://stackoverflow.com.

He graduated from St. Petersburg State University and currently resides in St. Petersburg, Russia.

José Pereda has done his PhD in structural engineering and works as an assistant professor in the School of Industrial Engineering at the University of Valladolid in Spain. His passion lies in applying programming to solve real problems. Working with Java since 1999, he is now a JavaFX advocate, developing commercial applications and open source projects (JFXtras, FXyz, https://github.com/jperedadnr), coauthoring a JavaFX book (JavaFX 8 Introduction by Example), blogging (http://jperedadnr.blogspot.com.es/), tweeting (@JPeredaDnr), and speaking at conferences (JavaOne, JAX, Jfokus, JavaLand, and so on). José lives with his wife and kids in Valladolid, Spain.