Zenda Ofir is a full-time independent evaluation specialist from South Africa, currently based in Switzerland. With a PhD in (Ecological) Chemistry, she was a senior programme manager in a South African Science Council and the Director of Research of the University of Pretoria before turning to evaluation. Since 2000 she has worked in many diverse fields from local to global level on the interface of evaluation, science/research and development. She has a special focus on Africa and Asia, on the intersection of humanity with nature, and on how to use evaluation to help accelerate progress towards urgently-needed large-scale transformative change. She is a former AfrEA President, IOCE Vice-President, AEA Board Member and co-founder of SAMEA. She has been a visiting professor at Hiroshima University and for several years presented the Aid Effectiveness module at the United Nations University in Tokyo. At present she is Vice-President of IDEAS, a Lead Steward in the SDG Transformations Forum, a Fellow at the Robert Bosch Academy in Berlin, and a Honorary Professor at Stellenbosch University in South Africa. She has advised many international organisations and serves on the editorial boards of several international evaluation journals. She is also a widely read blogger on Evaluation for Development.