Óscar studied and worked as a nurse in many hospitals and EU countries before he joined MSF and started his journey specializing in the treatment of Acute Malnutrition in Emergencies, first in Angola and then Niger. He has over 10 years of experience supporting such programs and capacity building in over 20 countries working for several NGO, doing SMART surveys and other kinds of programming such as Nutrition in Ebola settings. Lately, he has advised at HQ for different charities such as ACF USA, GOAL Ireland and UNICEF UK.