Constantine Sigalos after graduating from Athens College studied Economics (B.Sc) and Marketing (MBA) at the City University in London. He begun his career as a brand manager with Procter & Gamble (UK) and then moved into market research in multinational agencies in London and in Athens. In 1989 he established Global Link, an agency that has grown fast introducing some pioneer services in the Greek market. The company’s clientele includes leading Greek and multinational organizations. Global Link is a partner of the international network of research agencies GLOBAL, based in London and present in 35 countries.
Constantine Sigalos is a Board Member of the Greek Institute of Customer Service. During 1999-2004 he was a visiting professor of Marketing Research at the American College of Greece (Deree College). He is a frequent speaker in Marketing and Market Research conferences in Greece and abroad, whilst he has published numerous articles in professional journals.