Antony (Tonnie) is a seasoned impact measurement and evaluation specialist with a strong passion for leveraging data to drive strategic decision-making and systems change. He brings deep expertise in designing and implementing robust monitoring, evaluation, and learning (MEL) frameworks that help organizations measure what truly matters—outcomes, effectiveness, and long-term impact.

Before joining Sinapis, Tonnie worked with Maryland Global Initiatives in Nairobi and Kisii, where he played a key role in strengthening data management systems to ensure they were both effective and reliable. His work supported evidence-based programming and helped teams translate data into actionable insights.\

Tonnie continues to champion a culture of learning and accountability. He excels at helping organizations build rigorous, context-sensitive evaluation strategies and has a keen interest in supporting systems change by embedding adaptive learning and continuous improvement into program design. He firmly believes that informed decisions stem from high-quality data and well-structured evaluation processes.

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