CEO at jClarity, London JUG co-leader, Java & FOSS speaker, Author, Javaranch Bartender, PCGen Chairmonkey, Ikasan Community lead, mad musings may follow :)
Martijn Verburg is the CEO and co-founder of jClarity (https://www.jclarity.com). He is the co-leader of the London Java User Group (LJC), and leads the global Adopt a JSR and Adopt OpenJDK efforts to enable the community to contribute to Java standards and OpenJDK.
Martijn is the co-author of "The Well-Grounded Java Developer" on Java 7, Polyglot Programming on the JVM and modern software development techniques. Martijn also acts as a community lead for the PCGen and Ikasan open source projects, moderates at the Javaranch and can be found answering thorny questions on the programmers stack exchange sub-site. He was recently made a Java Champion in recognition for his contribution to the Java ecosystem.
He's a popular speaker at major conferences (JavaOne, JFokus, OSCON, Devoxx etc) where he is known for challenging the industry status quo as "The Diabolical Developer".