Daniel Siegl has been promoting, building and contributing to the standardization of model-based engineering tools since 1999. ProStep, OpenMBEE, Incose (Assistant Director for Standards) and OMG are only some of the international model-based systems engineering community organizations which profit from Daniel’s continued involvement. Daniel has been a key player at LieberLieber, the Company behind LemonTree, since 2006. He lives with his family near Vienna, Austria.