Oscar joined Wunderman in January 1999 as Account Director, and after three years was promoted to Managing Director of Wunderman Barcelona. In his role he helped build Wunderman into one of the top CRM agencies in the region, working with clients General Optica, Liberty Group, Novartis, Grupo Areas and Danone and winning new clients CaixaBank, Cetelem (BNP Paribas) and Naturgy Energy Group, among others.

In 2018, Oscar was appointed Managing Director of Wunderman Spain, the role he currently holds at Wunderman Thompson Spain. Oscar, who has two children, is a basketball lover and long-distance athlete who has finished five Ironman competitions and eight marathons.