Ellen Piwoz joined the Bill & Melinda Gates Foundation in 2007 and currently leads the Nutrition Strategy Evidence to Action Initiative. Over her 12 years at the foundation, she has shaped and managed a diverse portfolio of grants including research on healthy birth, growth, and development; testing new delivery models for improving maternal nutrition, breastfeeding, and complementary feeding at scale (Alive & Thrive); costing and financing of interventions to achieve the 2025 World Health Assembly nutrition targets; developing and using analytic modeling tools for improved nutrition decision-making; evidence syntheses and guidelines for use in policy and program decision-making; and strengthening the global nutrition architecture. Prior to joining the foundation, Dr. Piwoz was a senior advisor on nutrition, advising the Africa Bureau Office of Sustainable Development at USAID, and co-investigator on numerous clinical trials and behavioral studies on prevention of mother-to-child transmission of HIV. She held adjunct faculty appointments in the Schools of Public Health at the Johns Hopkins University and the University of North Carolina, Chapel Hill. Dr. Piwoz has a Doctor of Science degree in Human Nutrition and a Master of Health Science degree in International Health from the Johns Hopkins University Bloomberg School of Public Health.