Mark Sieffert spent nearly four years working as an alliance development specialist in the USAID Bureau for Food Security, which leads the U.S. government’s global hunger and food security initiative. Sieffert concentrated on the coffee industry, working to build public–private partnerships to address threats to coffee-growing communities in Latin America and Africa. He co-led USAID’s response to a recent outbreak of coffee rust, a devastating disease of coffee plants, focusing particularly on expanding access to finance and promoting collaborative research initiatives. His other work has focused on increasing farmer productivity in East Africa and stimulating private sector investment in climate-smart agriculture. This fall Sieffert joined Winrock International, a nonprofit that conducts development work around the world, where he will manage USDA and USAID rural development grants in South Asia.