Donnelly Mwachi is a globally recognized Monitoring, Evaluation, and Learning (MEL) and Impact Measurement specialist with over 17 years of experience driving evidence-based decision-making across 50+ countries in Africa, Asia, the Americas, Europe, and the Caribbean. He has led large-scale MEL systems design and implementation for organizations such as CARE USA, Save the Children, HelpAge International, Pathfinder International, Internews, Amref Health Africa, the International Development Research Centre (IDRC), and Frontline AIDS.

Donnelly’s expertise spans strategic MEL leadership, innovation in impact measurement, and the integration of AI-driven tools to enhance data systems and learning. He has overseen multi-million-dollar portfolios for major donors including the Bill & Melinda Gates Foundation, USAID, FCDO, Sida, and the Dutch Ministry of Foreign Affairs. His strength lies in translating complex data into actionable insights, developing adaptive learning frameworks, and mentoring teams to embed evidence into strategy and policy.

A thought leader and published author, contributing to global discourse on impact measurement, and sharing insights through international forums, conferences, and peer-reviewed journals focused on gender equality, health systems, and evidence-based programming. His work bridges theory and practice, advancing global understanding of how data, learning, and accountability drive sustainable development.

Beyond his professional roles, he remains deeply committed to promoting African-led evaluation and strengthening the continent’s voice in shaping global standards for transformative, data-driven social change.