Sumak is a member of the Cacha community, part of the Puruwa nation in Chimborazo province, Ecuador. She began serving as a UN Volunteer as part of the partnership between the United Nations Development Programme (UNDP) and the Global Environmental Facility (GEF) in 2017, after working for women's rights in the Ecuadorian National Assembly.

Through a programmatic and financial collaboration, UNV supports the implementation of the Global ABS UNDP-GEF project "Strengthening human resources, legal frameworks, and institutional capacities to implement the Nagoya Protocol".