Thomas Holl is co-founder and CTO (Chief Technical Officer) of the online language learning system Babbel. Thomas leads the development and the operation of the platform.Already during his studies in computer science Thomas co-founded his first company: The d-lusion interactive media GbR. Thomas developed music software like the first MP3 DJ tool, which, following its sale to Native Instruments GmbH, he further developed and optimized into the product "Traktor". With his experience he supported the Accenture GmbH as a technical consultant for three years before he co-foundedBabbel in Berlin in 2007.