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Didar Ali Didar is technical advisor for monitoring, evaluation, research, and learning (MERL) in Abt’s International Technical Practice (ITP). He has more than 10 years of experience in MERL, project design, and management in the areas of agriculture, food security, economic inclusion, civil society, governance, health, and education. He also has experience in women’s rights advocacy, including designing and implementing advocacy plans and organizing national and international events.

William Tuleu leads strategic growth initiatives across the company's U.S. foreign assistance and domestic portfolios.

Rosemary Dent is an international development professional with experience across gender equality, disability and social inclusion (GEDSI), business growth and proposal writing, partnerships and strategy. She has a background in community engagement and facilitation on topics such as consent and healthy relationships, women’s leadership, and the intersection of climate and gender. 

Dr. Satyendra Prasad is the Principal Technical Lead for Abt’s climate initiatives in the Asia-Pacific region. Dr. Prasad is a diplomat and governance expert with over two decades of governance experience across international organizations, including the United Nations (UN), World Bank, and the UK’s Department for International Development (DFID) – now known as the Foreign, Commonwealth & Development Office.

Ally Lynch has nine years of experience managing international development and humanitarian projects in the Asia Pacific region. She has led programming across a range of impact areas, including nature-based solutions for climate, food security, livelihoods, climate resilience, and disaster risk reduction.

Dr. Fiona Mactaggart is a multi-disciplinary technical advisor with more than 10 years of experience in monitoring, evaluation, research, and learning (MERL); infectious disease control; and public health. As a co-lead of Abt's MERL portfolio, she draws on complexity theory and scientific methods to help clients test what works, discover why it works, and provide timely evidence-based recommendations to inform important decisions about policy and practice. Mactaggart contributes to business development, programme delivery, and thought leadership. She works in five key areas: monitoring (e.g., design of digital tools and visualisation platforms) research (e.g., cross-sectional survey design), evaluation methodologies (e.g., contribution analysis), learning (e.g., portfolio level evidence-informed strategic decision making), and cross-cutting MERL capabilities (e.g., adaptive management and GEDSI). Mactaggart has worked extensively in the Pacific and Southeast Asia.