Achilleas Petropoulos Achilleas has more than 15 years of experience in digital marketing under several different roles, from creating and leading OgilvyOne’s data analytics and digital media department to serving as the first COO of Thinkdigital, one of the leading digital marketing groups in central, SE Europe and MENA. As a consultant he has been assisting international clients to enter the Greek market and advising local ones to expand their businesses in the SE European region.