Sebastian is a Sociologist by the Pontificia Universidad Católica and holds a Master's in Development Policy (MIDP) from Duke University. He was the social director of TECHO-Chile between 2005 and 2009. He was in charge of the design, implementation and evaluation of social programs, from the construction of emergency homes to the execution of definitive housing policies. In 2009, he was briefly involved in politics. Later, he spent some time outside of Chile, studying in the United States and working on a project as director of Planning and Development for the NGO America Solidaria in Haiti.
He specializes in development policies related to vulnerability. He has more than eight years of experience in the development of organizations and social programs. His strong commitment to direct work in communities and citizen participation have been a hallmark of his work in the different spaces in which he has worked. He was the development manager of ACCION Empresas and Local Consultant of the World Bank in Social Protection and, since June 2017, he is executive director of TECHO Chile.