He will also help develop the consumer PR division, and work closely with general manager Juan Francisco Polo.
Fournier was approached by the agency's founding owners, Jose Antonio Llornte and Olga Cuenca, having worked with them in the past.
Fournier left Edelman in 2003 to found publishing company Temas Cinco, which produces a customer magazine for American Express and a title for newly-weds, 'Lunas de Miel.' He will continue his involvement in the firm.