Pierre-Yves Saumont has managed his own company for 15 years, specializing in natural language processing. At the same time, he has been the Publishing Manager for the French subsidiary of a leading American computer books publisher. He wrote about 30 books about computers and software development in Java and other languages. Since 2008, he works for Alcatel-Lucent Submarine Networks as an R&D Software Engineer, and he is responsible for the architecture of several projects such as distributed application framework, functional framework and functional DSML (Domain Specific Modeling Language). He is the author of "Functional Programming in Java" and "The Joy of Kotlin" (Manning). He is also a double bass Jazz player.