Java Champion at Oracle, Book Author, Speaker.

Software developer, entrepreneur, blogger. Mostly Java, sometimes Swift, Golang, Bash and all the other fun stuff.

Author. Java Champion. Creator of the Eclipse Collections OSS Java library (https://github.com/eclipse-collections). Inspired by Smalltalk. Opinions are my own.

Backend engineer sharing insights on scalable systems, Kafka, Cassandra, and cloud-native tools. Follow for practical guides and tips.

Simon Martinelli is a Java Champion, Vaadin Champion, and Oracle ACE Pro with over 30 years of experience as a software architect, developer, and trainer.

I'm a DevSecOps/Build & Release Engineer with a background in Java Development and Linux/Unix. I am an active contributor in the OSS community and like helping.