Team

Meet the dedicated Impact Institute team

Welcome to the heart of Impact Institute, where a team of passionate professionals is committed to driving positive change in the global economic landscape. Our diverse and skilled staff brings together a wealth of expertise in impact measurement, valuation, and sustainable practices. Through meticulous training, innovative tools, and tailored services, the team at Impact Institute stands ready to guide you on your journey towards impactful and sustainable practices. Join us in shaping a better world through the transformative power of the impact economy. Read more about us.

Team Impact Institute

Team Impact Institute

Executive Council

Michel Scholte

Executive Council Member & Co-Founder

Michel Scholte is the Executive Council Member and Co-Founder of the Impact Institute. He is a social entrepreneur dedicated to a more equitable economy. Michel is also the co-founder and executive director of True Price. He holds a variety of advisory board positions and is an alumnus of the Shapers Network of the World Economic Forum and a member of Worldconnectors. He holds an MSc degree in Sociology from the VU University Amsterdam, with a specialisation in research methods, politics and living wages. Michel is a frequently asked public speaker and opinionist in the field of impact measurement and valuation.

Adrian de Grootz Ruiz
Adrian de Groot Ruiz

CEO & Co-Founder

Adrian is the CEO and Co-founder of Impact Institute. He is also the Co-Founder of True Price, the Co-Initiator and board member of the Impact Economy Foundation, and the Director of True Price Foundation. Adrian holds a PhD in Economics from the University of Amsterdam, cum laude, and has served as a member of the Supervisory Board of Utrecht University since 2022. He was recognised as a Global Shaper by the World Economic Forum and as one of the top-20 of most influential people in sustainability by the Dutch newspaper Trouw.

Idgar van Kippersluis

CSO

Idgar van Kippersluis is a seasoned advisor with a strong track record in scaling and supporting mission-driven ventures. With extensive experience in investing in and managing scale-ups, he now focuses on guiding impact-oriented organisations. We came to know Idgar through his role at the School of Moral Ambition. His strategic insight and deep commitment to meaningful change make him a valued contributor to our work.

Anne Barendregt

COO

Anne is the Chief Operations Officer at Impact Institute, where she plays a pivotal role in driving operational excellence and organizational development. With more than 15 years of experience in project and change management, she brings deep expertise in orchestrating complex programs and processes that bridge strategic vision with day-to-day execution. Before joining Impact Institute in 2019, Anne worked in the international water sector, leading multi-stakeholder projects, and aligning public and private sector interests. With a strong foundation in both engineering and management, Anne is known for her hands-on leadership style, pragmatic problem-solving skills, and ability to build and scale high-performing teams across borders.

Consulting

Megan Roux

Manager

Megan leads the Sustainable Finance team. She obtained an MSc in Economics, specialising in Behavioral Economics and Game Theory from the University of Amsterdam. Prior to that, she received a BA in Economics at Rhodes University in South Africa.

Adrien Gruson

Team Lead

Adrien is a Team Lead in the Sustainable Finance and the Data departments of Impact Institute. His work focuses on asset managers and asset owners using technology-driven solutions to model and quantify the impacts of any kind of balance sheet, across all asset classes and across environmental, social and human topics. He helps investors to progress further into their journey to become an impactful capital provider to the world economy. Prior to working with Impact Institute, Adrien worked within the Credit Agricole Group, in investment banking and in asset management. Adrien holds a Masters in Engineering from the Ecole Centrale de Lyon, and an MSC in Investment Banking and Financial Markets from the University Paris Dauphine.

Roy Verkaik

Senior Associate

Roy is a Senior Associate. He holds a MSc in Business Administration with a specialization in Business Analytics. Roy previously worked in the financial sector at a large corporate bank. He believes in the transformative power of sound data use in organisations. A personal ambition is to keep exploring the added value of Micro Finance, wanting to empower communities with financial means.

Lorenzo Bissi

Associate

Lorenzo is an Associate in the Sustainable Finance department. He has moved to the Netherlands to study a BA in European Studies and an LLM in Law and Finance at the University of Amsterdam. The Impact Institute is the starting point of his career: he wants to contribute to positive change from the very beginning.

Florian Reuter

Principal

Florian leads the Energy, Water and Infrastructure (EWI) consulting team. He is an experienced consultant and project manager in impact measurement, management and strategy. He joined the organisation in 2018 and builds several long-term collaborations in the energy, water and resource transitions.
Florian believes “impact thinking” can help organisations navigate just transitions. He is as an optimist with a sound critical mindset, and has 10+ years experience in consulting with a MSc in Mathematics. He regularly taps into experiences ranging from his time at Deloitte in risk consulting to travelling the world on a bicycle.

Lotte Dietz

Manager

Lotte is Manager of the Energy, Water and Infrastructure (EWI) consulting team. Prior to joining Impact Institute, she worked >5 years as a transition manager for VanWaarde with a focus on making the food and water system futureproof. She holds a MSc in Neuro- and Behavioural Sciences from the Rijksuniversiteit Groningen. Lotte truly believes that impact measurement and transparency can reshape capitalism and make the world a better place. Outside work she loves to dance, run, cycle and go to music festivals.

Mathijs Rozemuller

Senior Associate

Mathijs is Senior Associate in the Energy, Water and Infrastructure (EWI) consulting team. He holds a master in physics and PhD in systems biology. In the evenings he is often found on a stage performing (musical) improv comedy. Mathijs firmly believes in the necessity to broadly consider all forms of impact to ensure a prosperous and fair future.

Christine team page photo
Christine van Tuyll

Manager

Christine is a Project Manager and Lead of the Food Proposition at Impact Institute. In this role, she focuses on enabling food system transformation by helping organizations understand and steer their impact.

She began her career as a strategy consultant at Bain & Company, advising clients across sectors on strategic and organizational challenges for 4.5 years. After Bain, she joined the School for Moral Ambition and worked at Rubio, an impact investment fund, where she enhanced its methodology to assess and manage social and environmental impact.

Christine holds a degree in Nanobiology from TU Delft and a Graduate Certificate in Sustainability from the University of Sydney. She is particularly interested in the protein transition and the role of biotech in building a sustainable food system. She is driven by the belief that money can and should work for society.

Mariasole Petti

Consultant

Mariasole is a Consultant within the Responsible Value Chain Team. She studied International Relationships in Rome where she subsequently obtained an MSc degree in European Economy. After working for an NGO promoting human rights and sustainability, she moved to the Netherlands to finalize her academic journey with an MSc in Global Water Challenges (at the Vrije Universiteit of Amsterdam). Highly interested in the challenges posed by environmental sustainability and economic development, she is dedicated to making a meaningful impact.

Danai Aberg

Consultant

Danai is a Consultant in the Responsible Value Chains Team. She just completed a master’s degree in Environmental Policy at Wageningen University. Prior to that she was in London, completing a BA in Politics and International Relations. She is passionate about interdisciplinary approaches towards tackling sustainability issues.

Technology

Rogier Schutte

Head of Product

Rogier Schutte is a software geek with over 10 years of experience as a founder of several startups. He has worked on a wide range of industries, from fintech to health tech. Rogier is a skilled product manager with a focus on user research and usability

Hans Westrik

Data Scientist

Hans previously worked as a Researcher at Priogen Energy and holds a MSc in Mathematics.

Lotte
Lotte Jonkergouw

Web Developer

Lotte is performing both managerial tasks as well as being a developer in the scrum team. Previously, she worked as a consultant at EY in the areas of software and mergers & acquisitions. She obtained an MSc in Physics by studying the statistical data analysis of the Higgs boson, and a MSc in Software Engineering by specialising in cyber security analytics.

Tim Jonkers

Product Owner

Tim previously worked as a Customer Engagement Consultant for large banks and wealth management partners. He believes collaboration is a prerequisite for creating value and by doing it together improve complete value chains. He obtained a MSc in Business Administration, specializing in Marketing from Radboud University Nijmegen.

lewis zwart
Lewis Zwart

Web Developer

Lewis has worked on bespoke client tools as well as standardised impact calculation engines. Lewis likes to use an agile way of working to fulfill clients’ needs efficiently and is also passionate about capturing our impact methodology nicely in code. Previously she obtained a MSc in Mathematics at the University of Amsterdam.

Education, Knowledge & Research

Reinier de Adelhart Toorop

Researcher

Reinier is Head of Research and he leads the development of new impact methodology. Reinier is proud to have published a review article on True Cost Accounting in Nature Food. Previously he was Research Associate at Roland Berger Strategy Consultants. Reinier holds a PhD in Theoretical Particle Physics from Leiden University. He was a world champion in debating (English-as-a-second-language) and a silver medalist at the International Biology Olympiad.

Bart van Veen

Team Lead Researcher

Bart works as a Researcher. He holds an MSc in Human Movement Sciences and a PhD in Mechanical Engineering, specializing in stochastic modelling of motor control. Previously, he was a post-doctoral researcher in biomechanics at the University of Sheffield. Before joining Impact Institute, he worked on turning an old bunker into an urban farm.

Loes verdonk
Loes Verdonk

Associate

Loes is a Research Associate. She holds a MSc in Climate Studies from Wageningen University and Research with a specialization in Biogeochemical Cycles, and previously obtained an interdisciplinary BSc in Earth Sciences. Before joining Impact Institute, she worked at Wageningen Environmental Research.

Bettina Schmiedler

Fellow

Bettina is a Research Fellow. She recently obtained her MSc in Law and Society: Governance and Global Development from Leiden University. Before moving to the Netherlands, Bettina worked as a Community Manager and Communications Lead at Impact Hub Hamburg. Her passion for promoting an impact economy already began during her undergraduate: Alongside studying Business Law and Business Psychology, she held leading roles at Enactus, a student initiative dedicated to Social Entrepreneurship. In her free time, Bettina enjoys writing poetry, dancing, and chasing tasty plant-based food.

Marketing & Communications

Simone van Klaveren

Senior Manager External Affairs & Strategic Partnerships

Simone van Klaveren is our Senior Manager External Affairs & Strategic Partnerships. Prior to that she managed our External Affairs, Marketing & Communications team for over a year – and before that she was our Coalition Manager, working on the development and management of strategic international multistakeholder partnerships and coalitions. Before joining Impact Institute, she worked in London at the Pioneers Post – the leading international social enterprise and impact investment platform. She holds a Masters degree in Intercultural Communications from Utrecht University. Professionally, she’s passionate about mission-business, advocating that both business and making positive social impact can (/should!) go hand in hand – and personally she’s passionate about everything animal-related.

Roosa Hakkarainen

Marketing & Communications Manager

Roosa is a Marketing & Communications Manager at Impact Institute. Her diverse background spans across the United States, Netherlands and Finland in impact-driven communications in NGOs, start-ups and small consultancies. She holds an MSc in Communication Science (Research) from the University of Amsterdam and a BSc in Political Science from the University of Turku, Finland. Her true passion is to convince, inform and educate people via creative means, such as writing and visual media, to build a just and sustainable world.

Group Services

Christoph Meier

Operations Officer

Christoph completed a master’s degree programme in Corporate Environmental Management at the University of Jyväskylä and holds a BBA in International Business and Management from the Hanze University of Applied Sciences, Groningen. During and between his studies, he completed different internships in the areas of supply chain management, vendor management, and humanitarian aid projects.

Martha Dani

Manager and Financial Controller

Martha has been working for 10 years in Finance, with experience as Financial Analyst and Investor Relations Analyst. Before joining Impact Institute, she worked as a Credit controller for IDEXX BV, and now she is ready to contribute to a more sustainable project.

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