Speaker: Marc Jansen (terrestris GmbH & Co. KG)
I have been working with FOSS4G since roughly ten years and I am a core contributor to some of my most-loved ones. This includes OpenLayers and GeoExt where I am also a member of the PSC. Additionally I am an OSGeo Charter Member. I am a regular speaker at national and international conferences and have held workshops both in English and German.