He has worked for several international organizations including the Technology Centre of Hannover (Germany), LEGO (Denmark), Eagle River Interactive (USA), Philips Research (Netherlands), ATR (Japan), and The Eindhoven University of Technology (Netherlands). Christoph is an associate editor of the International Journal of Social Robotics, the International Journal of Human Computer Studies and Entertainment Computing Journal. Christoph is a member of the New Zealand Institute for Language Brain & Behavior, ACM SIGCHI, The New Zealand Association Of Scientists and Academic Freedom Aotearoa.