Martijn Verburg

Martijn Verburg is the Principal SWE Group Manager for the Java Engineering Group at Microsoft. Prior to the acquisition by Microsoft, he was the CEO and co-founder of jClarity. He is the co-leader of the London Java User Group (LJC) and represents them in the Steering Committees for both the Java Community Process and Jakarta EE. Martijn is one of the co-founders of Eclipse Adoptium (previously AdoptOpenJDK) and today represents Microsoft on its Project Management Committee (PMC).

Martijn is the co-author of "The Well-Grounded Java Developer" and "The Well-Grounded Java Developer 2." He was made a Java Champion in recognition for his contribution to the Java ecosystem.

Martijn can also be found at major conferences (JavaOne, JFokus, OSCON, Devoxx etc) where he is known for challenging the industry status quo as "the Diabolical Developer."

Holly Cummins

Holly Cummins is a Senior Principal Software Engineer on the Red Hat Quarkus team. Before joining Red Hat, Holly was a long time IBMer. In her time at IBM, Holly has been a full-stack javascript developer, a WebSphere Liberty build architect, a client-facing consultant, a JVM performance engineer, and an innovation leader. During her time in the IBM Garage, Holly led projects for enormous banks, tiny startups, and everything in between. Holly has used the power of cloud to understand climate risks, count fish, help a blind athlete run ultra-marathons in the desert solo, and invent stories (although not at all the same time). Holly is also a Java Champion, author, and regular keynote speaker. You can follow her on twitter at @holly_cummins or at hollycummins.com.

Ben Evans

Ben helps to run the London Java Community, and represented the user community as a voting member on Java’s governing body - the JCP Executive Committee for 6 years. He is a Java Champion & 3-time JavaOne Rock Star Speaker.

Ben is an accomplished author, he has written 6 books, including multiple editions of "Java in a Nutshell", published by O'Reilly.

• Java in a Nutshell, (editions 5, 6 & 7)
• Optimizing Java
• Java: The Legend
• The Well-Grounded Java Developer

He is the track lead (commissioning editor) for Java / JVM at InfoQ, writes regularly for industry publications and is a frequent speaker at technical conferences worldwide. Ben was born and raised in Cornwall, and holds a Masters degree in Mathematics from the University of Cambridge. Before joining the tech industry Ben was a researcher in theoretical physics, working on theories which are now being tested at the Large Hadron Collider at CERN.

Read Ben's Post on the Skills Matter Blog:

Key Reasons To Adopt Java 11

Ben Evans — Java expert, educator, and author — looks back at 2018

Heather VanCura

Heather is the director and chairperson of the Java Community Process (JCP) program. In her role she is responsible for leadership of the community. She also serves as an international speaker, mentor, and leader of hack days. VanCura oversees the work of the JCP Executive Committee, JCP.org, JSR management, community building, events, communications, and growth of the membership. She is also a contributor and leader of community-driven education and adoption programs. She is the spec lead for JSRs as part of the ongoing JCP.Next effort to evolve the JCP itself. Heather is based in California, is passionate about Java, developer communities, and enjoys trying new sports and fitness activities in her free time.

Twitter @heathervc