GEMS World Academy, Singapore. Sebastien has been appointed Head of Marketing and Admissions at GEMS World Academy (Singpore). Prior to joining the institution, Sebastien worked for the International Baccalaureate for six years in the Asia Pacific office as the Regional Marketing & Communications Manager APAC. Sebastien has over 20 years of experience in sales, marketing communications, media, public relations and brand reputation management. An IB Diploma graduate from UWCSEA, Sebastien formerly held communication and marketing roles with the British Chamber of Commerce and various multinational corporations working throughout the Asia Pacific region.