Most recently, Stacey has worked on the Economics of Land Degradation Initiative, serving as the leader of the Options and Pathways for Action Working Group. She has also undertaken household-level studies in Vietnam, Cambodia and Tanzania, examining how poor households in rural areas use water and water-dependent ecosystem services in their livelihoods.

Prior to joining SEI, Stacey was Co-Founder and Project Director of the Cayes Foundation, in Punta Gorda, Belize. Before that, she served as Project Coordinator and Development Officer for the Toledo Institute for Development and Environment (TIDE), also in Punta Gorda. From 1991 to 1997, she was a Foreign Service Officer for the U.S. Department of State in Washington, D.C., and Hong Kong.

Stacey has an MSc with Merit in Development Management and a Diploma with Distinction in Accounting and Finance from the London School of Economics. She previously earned a Bachelor of Arts with High Honours in Plan II Honours Programme and Government at the University of Texas (Austin). Stacey is currently working on her PhD at the University of Twente, Netherlands.