Duchess | Home. JavaOne. Hendrik Ebbers Hendrik Ebbers is senior Java architect at Materna GmbH in Dortmund, Germany. His main focus, besides research and development, is primarily in the areas of JavaFX, middleware, and DevOps. Read More Trisha Gee Trisha Gee is a developer at 10gen (the MongoDB company). Read More Arun Gupta Arun Gupta is director of developer advocacy at Red Hat and focuses on JBoss middleware. Les Hazlewood Les Hazlewood is Stormpath co-founder and CTO and the Apache Shiro PMC Chair. David Svoboda David Svoboda is a software security engineer at CERT/SEI. Niklas Therning Niklas Therning is the founder of the RoboVM open-source project and head geek at Trillian Mobile AB. Home - Devoxx 2012. JUG Events - Brussels JUG.