Nigeria and Rwanda: Strengthening Financial Sector Deepening MREL systems

Tandem is currently supporting Enhancing Financial Innovation and Access (EFInA) in Nigeria and Access to Finance Rwanda (AFR) to strengthen their MREL systems.  This...

Working alongside, to help you get the most out of monitoring, evaluation and research

Tandem was founded in 2019 by a small group of experienced development practitioners. We specialise in monitoring, evaluation and research. Our mission is to enable our clients – donors, foundations, investors, and implementers – to drive impact through data, insight and learning.


Gareth Davies


15 years' experience with particular expertise in systemic and adaptive approaches to development. Experienced trainer and one of the World's leading experts in Market Systems Development and the DCED Standard for Results Measurement. Experienced in designing and conducting evaluations.

Mark Winters


15 years' experience as a consultant and with the UK's DFID. Expertise in systemic and adaptive approaches with significant experience in economic development. Experienced in programme design; designing and strengthening monitoring systems; training and coaching; and evaluation for accountability and learning.

Sabine Garbarino

Senior Consultant

Gender, diversity and inclusion specialist with over 15 years’ experience. Recent work focuses on strengthening women’s economic empowerment in private sector development programmes. Focus on integrating gender and inclusion in Monitoring, Evaluation and Learning and using data to make women’s roles and experiences visible.

Jake Lomax

Senior Consultant

Systemic change research, strategy and measurement specialist with 14 years' experience, a PhD in International Development and an MSc in Research Methods for International Development. Expertise in mixed-methods research design and implementation, including the management of household surveys and quantitative analysis.