Ron Veen is a highly experienced software engineer, navigating the spectrum from Midrange Systems to Micro Services. Driven by his passion for software engineering and software architecture, he has amassed more than 15 years of experience working on the JVM and the Java ecosystem. Ron has seen all the frameworks and libraries from Apache to ZK and has worked with many versions of Java EE and later, Jakarta EE. An avid fan of alternative JVM languages like Groovy, Scala, Clojure, and his personal favorite Kotlin, Ron is also an Oracle Certified Java Programmer (OCP) and Sun Certified Business Component Developer (SCBCD/OCPBCD). Ron is also a regular speaker at international conferences. David Vlijmincx is a software developer with 8 years of experience in the field. He has a strong background in software development, with a focus on building scalable, high-quality applications using the Java programming language. David’s expertise spans through a variety of projects, ranging from small, standalone applications to large, complex systems, which needed to be migrated to newer versions of the EE specification or the cloud. David is an Oracle Certified Java Programmer (OCP) and is an avid blogger and speaker at industry conferences.