Cristina Diez Sagüillo has been a member of the International Movement ATD Fourth World's full-time volunteer corps since 2003. Prior to that she worked in the financial sector as a fund administrator.
She has a degree in Education in Deusto Jesuit University in Bilbao, a masters in Theater and Social Education in Ramon Lull University in Barcelona and training in Family Constellations in the Ecole Hellinger in Paris. From 1997 to 2000 she worked in grassroots projects with children and young people in poverty in disadvantaged urban areas of Spain. In 2003 she joined the Movement’s international center outside of Paris, France, where her principal responsibility was in international policy and advocacy, representing people in extreme poverty to international organizations. In 2008 she joined the Spanish branch of the International Movement ATD Fourth World to coordinate recruitment and training. She has worked in partnership with Professor Jona Rosenfeld (Myers JDC Brookdale Institute of Jerusalem) to introduce the methodology of Learning from Success and Ongoing Learning as a tool for organizational planning and training. Since 2010 she is the main representative of the organization to the United Nations and the Director of International Relations Training in New York. In her role she coordinates a team that follows sustainable development, social development, financing for development and human rights.