Esther Tumbare has a passion for operations research, data-driven programming, innovative program design, and leading successful teams. She worked as a clinician in Zimbabwe, Namibia, and Botswana for many years before joining the field of public health.

Before joining IntraHealth, Esther served as a technical director at the Elizabeth Glaser Pediatric AIDS Foundation, based first in Zimbabwe and then in Lesotho. She provided technical guidance and oversight for multiple TB/HIV-prevention, care, and treatment programs funded through the Children's Investment Fund Foundation, the UK's Department for International Development, the US Centers for Disease Control and Prevention (CDC), the US Agency for International Development, UNITAID, Gilead, and Johnson & Johnson.

Esther's expertise includes PEPFAR requirements and targets; differentiated, integrated service delivery; and programmatic technical assistance and capacity-building for health workers. She has worked in National Institutes of Health-funded research on prevention of mother-to-child HIV transmission, including clinical trials with Harvard University (based in Botswana) and for the CDC in Botswana and Zimbabwe.

Esther earned her medical degree (MBCHB) from the University of Zimbabwe and a master's degree in public health from the University of Liverpool.