Our people

Meet the On Think Tanks team. It is made up of a growing network of core staff plus trainers and associates and supported by an international Advisory Board.

The team

  • Andrea Baertl

    Research officer

    Andrea is a social psychologist with an MSc in Wellbeing and Human Development from the University of Bath. She has experience in research, research communications, capacity building for NGOs and think tanks, and corporate social responsibility. Her research work focused on education, wellbeing and development in GRADE (Group for the Analisys of Development- Peru), Pontifical Catholic University of Peru and the University of Bath. Before joining On Think Tanks, Andrea worked at the Ella (Evidence and Lessons from Latin America ) Programme, where she oversaw the impact of the work of partner African and Latin American research centres.

  • Sofia Ballon

    Coordinator, Semana de la Evidencia

    Sofia is a political scientist from the University of Notre Dame with management studies at ESAN Graduate School of Business. She is an experienced networker who produces events to educate the general public and impact policy-making in her main areas of research: international relations, local government, environmental and gender justice, and innovation in development. She is currently working on the Evidence Week in Latin America. She has previously directed SinoLATAM Forum, a think tank that explores China - Latin America relations, and worked for the private, academic and public sectors in Peru, the USA, and China.

  • Till Bruckner

    Trainer, On Think Tanks School, and associate

    Till Bruckner has over a decade of experience in the field of research-driven advocacy. His professional history spans research, advocacy, policy analysis, and journalism. He has worked in a wide variety of contexts, including the UK, Afghanistan, Georgia, North Africa and the Caribbean. Till currently leads the TranspariMED campaign for clinical trial transparency and works as the advocacy manager for Transparify, as well as writing for a variety of media outlets. Till is interested in the hidden power relationships that structure global politics and our everyday lives, and in learning new ways of using research and advocacy to produce positive outcomes. He is the trainer for the On Think Tanks School course on advocacy and a regular contributor to the On Think Tanks blog. Till holds a PhD in Politics from the University of Bristol.

  • Eva Cardoso

    Programme manager and OTT School coordinator

    Eva has solid experience in managing various international research projects. She is very familiar with the think tank sector: she was the programme administrator for the RAPID Programme at ODI and has, since leaving, supported On Think Tanks on several projects including the On Think Tanks School, the Data Visualisation Competition and the On Think Tanks Exchange. Her key responsibilities for OTT Consulting Ltd are operations, financial and contractual management, supporting governance and planning and managing event and workshop logistics. Eva is the OTT School coordinator.

  • Caroline Cassidy


    Caroline is a communications specialist, who focuses on research communications, policy engagement and behavioural change. She is an associate for ODI, where she previously set up and led the strategic communications team for the Research and Policy in Development (RAPID) programme. Caroline has worked with governments, academics, NGOs and communicators in Asia, Africa, Europe, the Middle East and Latin America. This includes advising on strategic communications, and delivering training and mentoring to think tank, research and communications staff. She is also a writer of multiple toolkits, guides and blogs on a range of areas linked to communicating evidence.

  • Ajoy Datta

    Research associate

    Ajoy has 16 years of experience in international development with a focus on improving policy influencing and decision-making practices. He spent nine of those years as a researcher at the Overseas Development Institute’s Research and Policy in Development (RAPID) programme and remains an ODI associate. His interests include: 1) understanding the political economy of policy making processes at global, national and sub-national levels; 2) supporting government institutions, think tanks, networks and aid organisations to contribute to changes in policy and achieve impact; 3) supporting these organisations to learn and change themselves in the face of complexity and uncertainty and 4) evaluating the extent to which projects, programmes and policy actors contribute to changes in outcomes and impacts. His work has primarily taken him to sub-Saharan Africa (including Ghana, Zambia and Kenya) and South (including India, Bangladesh and Sri Lanka) and Southeast Asia (including Indonesia and Vietnam). Ajoy leads OTT Consulting project development and implementation.

  • Leandro Echt

    Research associate

    Leandro works in the policy and research field. He engages with think tanks, researchers, NGOs and public agencies interested in linking evidence with public decisions, particularly in developing countries, through capacity building, mentoring and consultancy activities including evaluation of programs and organisational assessments. His work is complemented by research initiatives. He is also the general coordinator of Politics & Ideas. Previously, he was the coordinator of the Influence, Monitoring and Evaluation Program at the Argentinean think tank Center for the Implementation of Public Policies promoting Equity and Growth (CIPPEC). He is Argentinean and is currently based in Florida, United States.

  • Carolina Kern

    Trainer, On Think Tanks School, and associate

    Carolina has over 10 years of experience working for development and humanitarian organisations, helping them to design, manage and raise the profile of projects and programmes. She has excellent skills in management, monitoring, research and communications, and has worked for bilateral donors, the United Nations and think tanks across health, governance, humanitarian and food security portfolios. Carolina spent seven years at the Overseas Development Institute where she worked as the communications officer for the Humanitarian Policy Group. She is now an independent consultant based in Kenya after working as a communications advisor to the Deputy Special Representative of the Secretary General in South Sudan, and managing projects for Australia's aid programmes in Kenya, Sudan, and South Sudan. She is currently working on a number of projects with a range of clients including the Africa Population and Health Research Center, Médecins Sans Frontières and UNICEF, among others.

  • Michael Kleiman

    Trainer, On Think Tanks School

    Michael is an award-winning documentary filmmaker and the founder of MediaTank Productions, a production company that specialises in public policy content. Michael’s feature documentaries include Web (2013), which won the Audience Award at the 2013 Doc NYC Film Festival and the Special Jury Prize at the 2014 Atlanta Film Festival, and The Last Survivor (2010), which premiered at the 2010 Oxford Film Festival where it was named Best Documentary and won the Audience Award for Best Film before going on to play over 250 venues around the world. Michael’s short films have been featured in The New York Times, Wired, and AOL. Michael was named a Fulbright Scholar by the U.S. State Department. He received a Master's in Public Policy from the Harvard Kennedy School and a B.A. in Cinema Studies from the University of Pennsylvania.

  • Dena Lomofsky

    Trainer, On Think Tanks School, and associate

    Dena is a development sociologist with over 20 years’ experience in the field. She has an honours degree in Industrial Sociology from the University of Cape Town, and a MA in social development from the University of the Western Cape. She has a special interest in participatory processes and building learning organisations. Dena has been working in the area of policy influence since 2010 and compliments her work with think tanks and research organisations, by working with community development organisations and governments. Dena lives and works in South Africa, and is a managing member of Southern Hemisphere which she co-founded in 2000. Dena is a skilled researcher, evaluator, trainer and facilitator. She specialises in applied research and evaluations; capacity building; programme design and planning, organisational strategy; and the design of monitoring, evaluation and learning systems. She has been designing and conducting training in Planning, Monitoring, Evaluation and Learning since 2000.

  • Enrique Mendizabal

    Founder and director

    Enrique is an independent policy entrepreneur. He is a Fellow of the Royal Society of Arts (FRSA). Until December 2010 he worked for the Overseas Development Institute (ODI) where he headed the Research and Policy in Development (RAPID) programme. At ODI he co-founded the Outcome Mapping Learning Community. Enrique is the co-founder of Politics & Ideas, the Peruvian Alliance for the Use of Evidence, and the Premio PODER al Think Tank Peruano del Año. Since 2016, he organises an annual Evidence Week in Latin America. Enrique worked as adviser to the Multiparty Commission for the Bicentennial of Peru's Independence at the National Congress. He lives in Lima (Peru) but spends quite some time in London and traveling to visit think tanks across the world. He combines this with travel writing.

  • Andrea Ordoñez

    Research associate

    Andrea is Director of Southern Voice, a network of think tanks devoted to bringing research from the Global South to international debates on the development agenda. She co-edited the book "Southern Perspectives on the Post-2015 International Development Agenda" with Debapriya Bhattacharya that compiles the research on a diversity of development issues by researchers in Africa, Latin America, and Asia. Her work focuses on better linking researchers from the Global South with their counterparts in other countries, strengthening their presence in international debates and fostering better knowledge systems to support sustainable development. She was previously the research director at Grupo FARO, a think tank in Ecuador. Andrea has developed research projects for the public sector and has carried out institutional and sectoral assessments for numerous international organizations. She is an economist by training and has a strong interest in how to carry out research and policy analysis that can inform policy.

  • Erika Perez-Leon

    Director of communications

    Erika has over ten years of experience managing creative teams and delivering complex communication and marketing campaigns for NGO, charity and for-profit clients in Africa, Latin America and the US. Her work includes brand development and implementation for editorial and consumer goods clients, along with information, education and communication materials, behaviour change campaigns and branding for urban and rural community programs on education, health, gender, and market development. In 2015, she worked on the Ebola crisis response in Sierra Leone as part of the IRC's communications team.

  • Zuleyka Ramos

    Programme manager

    Zuleyka is a programme manager at Universidad del Pacífico's Research Centre (CIUP) in Peru. CIUP hosts On Think Tanks. Zuleyka manages the grant from the Hewlett Foundation.

  • Annapoorna Ravichander

    Editor at large (South Asia)

    Dr. Annapoorna Ravichander is the head of policy engagement and communication at Public Affairs Centre in Bengaluru, India. She holds a PhD in history and is a corporate communications expert with over 25 years of experience in developing action-oriented communications strategies for global organisations. Drawing on her own experience, she now provides training and advice on media and communications to think tanks and other organisations. She has published articles in journals, newspapers and newsletters. She has also coordinated publishing books in the capacity of associate editor and coordinator. Her core skills include editing, communication and training. Until 2016 she was the head of the Communication and Policy Engagement Team (CPE) at the Center for Study, Technology and Policy (CSTEP) in India. Annapoorna has been a recipient of the Rotary Award for Exemplary Services in 1999, Vadodara, Calouste Gulbenkian Foundation, Portugal from 1985-86 and UGC Fellowship from 1984-1988.

  • Melanie Rayment

    Trainer, On Think Tanks School, and associate

    Melanie is a Design Strategist and Social Designer. She uses design-led practices to approach complex social issues in a cross-sector way, and works with organisations to enhance their problem solving capability and guide strategic change in a human-centred way. She co-designs policy, interventions, services, change and engagement programs to achieve public impact and the organisation’s mission. Melanie has 15 years’ experience in both the private and public sector. Her commercial experience includes working with global brands and agencies and during her time with the ‘big four’ management consultants, across Sydney, Tokyo, and London, Melanie applied design to large-scale organisational, customer and industry challenges. She has spent time as a university teacher in Design for Social Impact and worked at the University of Technology Sydney (UTS) in a transdisciplinary approach with citizens, governments, and NGOs to co-develop mission-based approaches to social innovation across an array of policy issues.

  • Jordan Tchilingirian

    Research director

    Jordan is a sociologist and lecturer in the Department of Social and Policy Sciences at the University of Bath. His research focuses on think-tanks and policy research institutes and explores issues related to evidence, expertise, the role of social science in public life, and professions. Jordan also has an interest in social network analysis (SNA).   His current research activities include a longitudinal SNA of the British think-tank community and how this changes in times of crisis, a continuing investigation into the intellectual life of think-tank researchers, mapping policy expertise within the MENA region, and a SNA of pharmaceutical companies in Europe.

  • Vanesa Weyrauch


    Vanesa is co-founder of Politics & Ideas and an associate researcher at CIPPEC, Argentina. She has worked in the policy and research field for the past 12 years, especially with think tanks in Latin America. She has created several online courses on topics like policy influence planning, designing policy relevant research agendas, funding models, research communications, and monitoring and evaluating policy influence addressed to think tanks in Latin America, Africa and Asia. Vanesa has developed and implemented an online course to help policymakers promote the use of research in policy. She also works as a mentor with several think tanks in developing countries, particularly in communications, policy influence, funding and monitoring and evaluation. She holds a BA in Social Communications from Universidad Austral (Argentina) and a Certificate of Special Studies in Management and Administration from Harvard University.

  • Stephen Yeo

    Adviser at large and research associate

    Stephen has had extensive involvement in building capacity for policy research and analysis in Sub-Saharan Africa, along with experience in monitoring and evaluation, in particular of policy research networks and policy influencing projects. He is currently involved in the evaluation of the International Growth Centre (IGC). Stephen is also a member of On Think Tanks' Advisory Board.

The contributors