Dierk König (JavaOne Rock Star) works as a fellow for Canoo Engineering AG, Basel, Switzerland.
He is a committer to many open-source projects including OpenDolphin, Frege, Groovy, Grails, GPars and GroovyFX, and a manager of the open-source Canoo WebTest project.
He is lead author of the "Groovy in Action" book, which is among the publisher's best-selling titles of the decade.
Twitter: @mittie.