Gunnar is a Consulting Member of Technical Staff at Oracle. As an open source contributor for the Oracle Coherence team, he is contributing to Oracle Coherence and the Coherence Spring project. As Java Champion, full-stack Spring aficionado and OSS committer, Gunnar has been deeply involved with the Java community for many years. As a former Spring team member for 9 years (and user since 2005), he contributed, among other projects, to Spring Integration, Spring Batch, Spring Security and Spring Cloud Data Flow. Furthermore, he co-founded the DevNexus developer conference in 2009 and was president of the Atlanta Java Users Group for 6 years.