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Community Leaders

Each community has its leaders. These are people who are voluntarily donating their time to coordinate the activities of their communities and to find solutions to the needs of their members.

Who are the current leaders?

The current leaders of the Java User Groups Community, in charge since January 2007, are:

Fabrizio Gianneschi
Fabrizio is the Chairman of the Java User Group Sardegna (, founded in 2002. Chosen a Top50 JUGs in the world, the JUG was the first to win a Duke's Choice Award in 2006. The sardinian JUG is now a concrete reality in the Java community, with strong international relationships and activities. Fabrizio is a Java Champion since 2005 and has over 15 years of experience in software analysis, project and development. He's also a true believer in the open source philosophy. Fabrizio works as a technical officer in the General Direction for the Innovation, Information and Communication Tecnology of the Autonomous Region of Sardinia (Italy), specialized in e-Government projects. Fabrizio is a known Java evangelist, with presentations in JavaPolis, JavaOne, and many Italian Java Conferences and JUG meetings.
Contact him at: fabrizio at

Michael Hüttermann
Michael is a Java evangelist pushing the Java platform and his community in many complementary ways. Michael has been very active in the JUGs Community: he established the Java User Group Cologne five years ago and leads it since then. The JUG Cologne provides high-quality talks with well-known speakers, inside the University of Cologne - one of the biggest universities in Germany. The JUG also has a Java regulars' table the last Friday of the month at a local brew house. Leading the JUG for so long gives him not only a longer then most participation on the community, but he has also joined the international JUGs Community very actively, on mailing lists, discussions and conferences. Michael is a freelancer, coach, developer and architect on Java/J2EE and agile development with nearly ten years of Java experience. He is a tutor providing seminars on Java and agile development. Michael is also a source code contributor to Java and some open source projects, is an author writing articles and currently finishes his book which will be published by O'Reilly soon.
Contact him at: michael at

John Yeary
John Yeary is a Java evangelist and has been working with Java since 1995. John is a technical blogger with a focus on Java Enterprise Edition technology, NetBeans, and GlassFish. John is currently the President of the Greenville Java Users Group (GreenJUG), and its founder. The Greenville Java Users Group celebrated its 10th year as a JUG in 2012. He is as instructor, mentor, and a prolific open source contributor.

John graduated from Maine Maritime Academy with a B.Sc. Marine Engineering with a concentration in mathematics. He is a merchant marine officer, and has a number of licenses and certifications. When he is not doing Java and F/OSS projects he likes to hike, sail, travel, and spend time with his family. John is also a Cub Scout Den Leader in the Boy Scouts of America (BSA) Pack 833 Den 8, and a Unit Commissioner.
Contact him at: johnyeary at


Bruno Souza
Bruno Souza is a Java Developer and Open Source Evangelist at Summa Technologies, and a Cloud Expert at ToolsCloud. Nurturing developer communities is a personal passion, and Bruno worked actively with Java, NetBeans, Open Solaris, OFBiz, and many other open source communities. As founder and coordinator of SouJava (The Java Users Society), one of the world's largest Java User Groups, Bruno leaded the expansion of the Java movement in Brazil. Founder of the Worldwide Java User Groups Community, Bruno helped the creation and organization of hundreds of JUGs worldwide. A Java Developer since the early days, Bruno participated in some of the largest Java projects in Brazil.

Bruno is also Honorary Director of the Open Source Initiative (OSI), President of the innovation-focused Campus Party Institute, and Coordinator of Nuvem, the Cloud Computing Lab of LSI/USP. When not in front of a computer, Bruno enjoys time with his family in a little hideout near S