Board / Staff

Walter is Regional Director for Central and Eastern Europe at the C.S. Mott Foundation. Based in the Foundation’s London office, Walter oversees grantmaking in Central and Eastern Europe and has specific responsibility for programming in the Western Balkans. Prior to joining Mott in 1998, Walter had a career as a lawyer, working in private practice in Washington, D.C., and Prague, and as a legal services attorney in Memphis, Tennessee. His interest in civil society development grew from observing the sweeping changes taking place in CEE in the 1990s and the important role the civil society sector played in transforming the region. Walter was born in Maryland and grew up in Connecticut. Before entering college, he spent a year studying abroad as an American Field Service student in Turkey. He is a graduate of Hamilton College in Clinton, New York, and the University Of Virginia School Of Law.

Carola is the Secretary General of Assifero, the Italian national membership of grant-making associations. She is also a human rights lawyer and has worked extensively with Italian rights-based NGOs. In 2002, she established a Human Rights Coordination Office for Volontariato Internazionale per lo Sviluppo and in 2011 became the first woman elected as its President. She has also served as a member of the Executive Board of the worldwide network of the Salesian of Don Bosco development NGOs, and as spokesperson of a network of 88 Italian human rights NGOs leading international and national advocacy.

The Charles Leopold Mayer foundation mission is to provide long term core grants to civil society organisations and movements advocating for a just transition towards sustainable societies. Juliette oversees different programmes on independent journalism and media, corporate accountability and fair trade, protection of whistleblowers and whistleblowing, and internet governance. Previously, Juliette worked in NGO’s in Brussels, Tirana (Albania) and Paris on European policies and international relations. She has studied political sciences.

Nienke Venema is the Director of Democracy and Media Foundation (SDM), an Amsterdam-based foundation committed to independent journalism and a strong and vigorous democracy. As the foundation’s first director, she has been responsible for setting it up as a professional grant-making organisation. SDM provides both project and long-term core grants to civil society actors and organisations focusing on concerns of fundamental rights and freedoms and/or media innovation. It also acts as an idealistic shareholder in media companies, with a strong focus on safeguarding editorially independent journalism.

In addition to concerns of fundamental rights and freedoms, Nienke focusses on the role foundations and venture philanthropy can play in safeguarding the future of independent journalism. Previously, she was the director of Humanity in Action in The Netherlands, an international educational organisation that runs programmes on social justice. Nienke holds a BA (Hons) in Social and Political Sciences from the University of Cambridge and an MSc in International Relations from the University of Amsterdam.

Jon oversaw the philanthropic activity of the family of the late Sir James Goldsmith for many years, much of which is directed towards environmental advocacy and campaigning.  He was closely involved in the development of the UK Environmental Funders Network and has co-authored multiple reports analysing tens of thousands of philanthropic grants from environmental funders, both in the UK and across Europe.  He is a steering group member of the European Environmental Funders Group and served two terms on the management board of the US Environmental Grantmakers Association.  He now works with a range of foundations through The Hour Is Late.

Dr. Pia Gerber was already addressing the issue of right-wing extremism and democratic culture while studying for her degree in social pedagogics. In her first career, she worked with disadvantaged young people and migrants from Eastern Europe, and was involved in political education on the subjects of National Socialism and feminist theory. After obtaining a second degree in political science and education at Heidelberg University, she worked as a municipal women’s rights officer, as a trainer for social workers, and finally as an academic assistant on the Executive Committee of the Freudenberg Foundation, Weinheim, Germany. She was awarded a doctorate for her dissertation on social innovations in the charitable foundation environment. Since 2008, she has been the Executive Director of the Freudenberg Foundation. She was a Deputy Chairperson of the Amadeu Antonio Foundation and a member of the Council on Integration of the German Government and is still a partner of the German Children and Youth Foundation and the CIVIS media Foundation.

Brandee M. Butler is a Division Director at the Open Society Initiative for Europe.  Based in Barcelona, she leads the Civil Liberties Division, which promotes better policing and more effective security policies, supports efforts to hold governments to account, and combats discrimination against religious and ethnic minorities.

Brandee has over 15 years of experience working with international foundations, civil society organisations, and the private sector to promote human rights.  Before joining OSIFE, she was Head of Gender Justice and Human Rights at C&A Foundation in Amsterdam leading programming on modern slavery and gender justice in fashion supply chains.  Earlier in her career, Brandee was awarded the Yale Law School Bernstein Fellowship for International Human Rights to combat child trafficking in Gabon.  She later practiced law at a children’s rights organization in Los Angeles and specialized in international justice as a program officer at the John D. and Catherine T. MacArthur Foundation. Brandee currently serves on the boards of women’s rights organisations MADRE and Women Win and is an advisor for ARTWORKS Projects, which uses design and the arts for human rights advocacy.

Brandee received a bachelor’s degree from Harvard University and a juris doctorate from Yale Law School.

Susan Treadwell, Deputy Director of the Open Society Initiative for Europe, passed away in November 2020 after a long battle with cancer. 

Susan was an Ariadne member from the network’s earliest days and served on the Advisory Board from 2017.  She was a lively presence at all of our events, both onstage and off, and could usually be found by following the sound of her infectious laugh.  Always ready with a question or thoughtful observation, she challenged us to do better and think bigger while helping to create a warm and welcoming community wherever she went.

During her 17 years at OSF, she was a champion of human rights and gender and racial justice movements across Europe and proved herself time and again to be a visionary and strategic thinker. 

With Susan’s passing, we have lost a great mind and a bright light in the human rights and philanthropic sector. 

Based at the Network of European Foundations (NEF) in Brussels, Debora identifies trends and opportunities, promotes membership, and liaises with other funders’ networks. Debora has 15 years’ experience of professional and volunteer activities for foundations, NGOs and international organisations. Before joining Ariadne, she worked for a few years as independent consultant. Previously, she managed the anti-discrimination work of the Open Society Initiative for Europe (OSIFE) focusing on Western Europe for five years. From 2008 to 2011, she managed the European Programme for Integration and Migration (EPIM), a grant-making initiative of NEF. Formerly, she worked for UNESCO in Cuba and Mexico and for Handicap International Belgium. She studied international relations, political sciences, culture and development studies, in Italy (Padua), France (Sciences-Po Paris), and Belgium (University of Leuven).

Hannah is Ariadne’s Communications and Membership Engagement Coordinator, having transitioned from her role as Programme Associate in June 2018. Prior to this she was a Policy and Campaigns Intern at the Joint Council for the Welfare of Immigrants. She has also volunteered in Amnesty International UK’s Human Rights Education Unit, and as an advice worker at Notre Dame Refugee Centre in London. Hannah has an MSc Human Rights from LSE, and she’s particularly interested in the rights of refugees and internally displaced persons, as well as women’s and labour rights, and human rights education.

Florent is Ariadne’s Programme and Events Assistant. In 2002, he moved to Coventry from France to complete his business degree. After graduating he lived in Leeds and worked briefly in the finance sector before becoming a freelance dancer, a passion he has been pursuing since his teenage years. Florent moved to London in 2014 and worked at the Royal Academy of Dance in the membership department and in their secondary school programme called Step into Dance.  

Alix Dunn is Project Lead for Ariadne’s Digital Power initiative. Alix is the founder of Computer Says Maybe, a firm focused on building an equitable future. She is a leading thinker on the use of technology for social change and accountability in technical design. She has extensive experience facilitating diverse groups to tackle complex data and technology challenges, and to advance a shared understanding of how technology can and should shape our world. She founded and directed The Engine Room, a global team supporting social sector organizations to make the most of technology and data. She is a former fellow at the Carr Center for Human RIghts at the Harvard Kennedy School and the Digital Impact Lab at the Stanford Philanthropy and Civil Society Center, and she sits on the advisory boards of Luminate, the Human Rights Initiative at Open Society Foundations, the International Criminal Court, Foxglove Legal, and is a trustee of the Ada Lovelace Institute for AI & Society.

Maya is Project Manager for Ariadne’s Digital Power initiative. She has been working in the international security and safety field for over 6 years. Previously, she has worked as a web developer, a systems administrator, and a research assistant who studied the politics of hackers and opensource. She has facilitated safety workshops at events all over the world with social justice organisations, foundations, and small nonprofits.

Maya specialises in organisational security, which is different from security for individuals. She loves to nerd out about systems, and how organisational structures feed into digital safety.