Till is one of the founders of the German language FOSSGIS conference series and joined his first OSGeo Conference in Minneapolis in 2005 before it was even called FOSS4G. Till also put a lot of effort into building the local and regional community and helped form FOSSGIS e.V., the legal body of the German language OSGeo Local Chapter which he also co-chairs.
In his main job he is founder and consutant at terrestris, an Open Source GIS company focused on web based FOSS4G software development and also of mundialis a more on Big Data and Remote Sensing Data processing focussed company. Till actively works with FOSS4G Software for more than a decade. Also he introduces agile methods into both companies.
Till was the chair of FOSS4G 2016 in Bonn. For some years, he chaired OSGeo's conference committee. Till is also active member of FOSSGIS e.V. and now member of the OSGeo board.