Sunday Joseph Duntoye

Sunday Joseph Duntoye is a distinguished data analytics, research, monitoring and evaluation specialist with 20 years of experience supporting evidence-based decision-making across governance, humanitarian, development, agriculture, health, energy, education and private-sector programmes. As Head of Data & Analytics at VIISAUS, he leads the organisation’s data and research analytics functions, overseeing research design, statistical analysis, monitoring and evaluation, data governance and performance reporting to support institutional effectiveness and informed strategic decisions.

His career spans survey methodology, applied statistics, impact evaluation, data management and research leadership. He has led or contributed to more than 100 research, evaluation and monitoring assignments for governments, development partners, United Nations agencies and international organisations, including the World Bank, USAID, GIZ, FAO, IFAD, FCDO and the European Union. His expertise covers the full research cycle, from questionnaire development, sampling and digital data collection to data cleaning, weighting, statistical analysis and reporting. He also designs monitoring and evaluation systems, results frameworks and performance indicators, translating complex datasets into practical insights for policymakers, development practitioners and institutional leaders.

Among his notable contributions is his work in strengthening data-driven governance, public opinion research and development programming in Nigeria. He has directed analytical reporting on governance, security, displacement, social-sector performance and rural livelihoods, alongside research on agriculture, public health, education, energy and economic development. At VIISAUS, he authored the organisation’s Data Strategy and Governance Policy, establishing a framework for data ownership, classification, access, retention, security and responsible use of artificial intelligence. His technical capabilities span statistical tools such as SPSS, STATA and R, alongside Power BI, advanced Excel and digital data collection platforms, enabling him to develop robust analytical systems and interactive dashboards for monitoring performance and communicating findings.

Before joining VIISAUS, Sunday served as Team Lead of the Nigeria Context Analysis Team at Mercy Corps, where he directed the production of more than 30 analytical and monitoring reports and coordinated multi-stakeholder assessments across Northern Nigeria. Previously, as Head of Data Analytics and Senior Survey Methodologist at NOIPolls, he designed and delivered more than 50 nationally representative and sub-national studies, managed Nigeria’s Afrobarometer Round 8 and Round 9 surveys as Country Data Manager, and established a computer-assisted telephone interviewing system that increased data-collection efficiency by over 30%. He also held research and biostatistics roles at Market Research Consultancy Limited and has worked independently with clients across governance, agriculture, health, energy and humanitarian development.

Sunday holds an MSc in Statistics and a BSc (Honours) in Statistics from the University of Ilorin. He is a member of the Nigerian Statistical Association and an Associate Member of the Nigerian Marketing Research Association. His research contributions include publications in the Afrobarometer Dispatch series on public opinion, governance, democracy, economic conditions, climate change and social development in Nigeria.

At VIISAUS, he brings together statistical expertise, research leadership and data governance to strengthen the quality of evidence informing policy, programme implementation and institutional strategy. His work reflects the firm’s commitment to rigorous analysis, reliable data systems and actionable intelligence that support better decisions and measurable development outcomes.