With over nearly four decades as a public health profession, Julia Walsh has extensive experience in evaluating cost-effectiveness of technologies and interventions for decreasing neonatal, infant, child and maternal health such as universal health insurance, vaccines, social franchise systems, and mobile phone apps. She has conducted research in more than 20 poor and middle income countries in Africa, Asia, and Latin America. Her research focuses on developing and testing innovative public and private sector solutions to improve health among the poorest population and promoting the widespread market penetration of evidence-based health interventions. She has conducted an analysis of the market feasibility, costs, and cost-effectiveness of the new method of fortification of rice with multivitamins in Columbia and India and a cost effectiveness of improvements in health information systems to enhance information based decision-making in poor countries. Julia also has considerable experience with many international agencies as a consultant or expert advisor. She has spent much of her academic career preparing the next generation of global public health professionals. More recently, she has linked the digital world with her efforts in the medical community and is a founder of Emmunify, a non-profit started with the goal to use technology to connect individuals in low income areas who need vaccinations with those who can supply and provide them.