Peter Späth graduated in 2002 as a physicist and soon afterward became an IT consultant, mainly for Java-related projects. In 2016, he decided to concentrate on writing books on various aspects, but with the main focus on software development. With two books about graphics and sound processing, three books on Android app development, and a beginner's book on Jakarta EE development, the author continues his effort in writing software development-related literature.

Felipe Gutierrez is a Senior Platform Architect at Pivotal, the creators of Spring Boot and Spring Framework, where he serves as a senior consultant with the Spring team. He has more than 20 years of IT experience, during which time he developed programs for companies in multiple vertical industries such as government, retail, healthcare, education, and banking. He also develops in Groovy, RabbitMQ, and other technologies. Previously he has consulted for companies such as Nokia, Apple, Redbox, and Qualcomm, among others. He received his bachelor and master degrees in computer science from Instituto Tecnologico y de Estudios Superiores de Monterrey Campus Ciudad de Mexico.