Ringier Axel Springer creates new COO position by Christo Volschenk in AIM Group 12 Dec 2014 Dr. Christoph Grau (37) will join Ringier Axel Springer Media AG as chief operations officer (COO) on Jan. 5, 2015. The position was newly created, the company announced today. Before joining Ringier Axel Springer Media AG, Grau worked as chief digital officer for Macmillan Education in London, a leading publisher in the language learning, schools and higher education business, where he was res This article is only available to AIM Group clients. Please subscribe now or log in to view. Share Insidersringier axel springer Christo Volschenk Christo Volschenk is managing editor of the news on Aimgroup.com and our senior analyst covering Naspers. He brings more than 31 years of experience in business journalism to the team - the last 18 years focused on classifieds and e-commerce. Apart from working closely with the AIM Group, Christo is a freelance journalist, content manager, and copy editor. Before branching out on his own, he spent 15 years with Naspers in South Africa as journalist, economics editor and online project manager. He now spends most his day editing the news reported by 23 colleagues in 23 countries from his base in Stuttgart, Germany.