An economist by training, Zillah holds a Master of Economics – Econometrics from Kenyatta University and a Bachelor of Economics and Statistics from the University of Nairobi. She is also a Certified Expert in Sustainable Finance, Climate Adaptation Finance, and Renewable Energy Finance, and holds a Diploma in Green Finance from the Frankfurt School of Finance & Management. Before joining FSD Africa, she held roles in Impact Assessment and Results Measurement at DSW (German Foundation for World Population), Plan International, and IntraHealth International, leading research and impact functions across the East African region.