Conflicts are diverse; hence, so is our team. With experiences including mediation, negotiation, legal, medical, and management experiences in the public and private sectors, we are a unique blend of professionals united by a common cause.

We believe in what we do, and we do what we believe in. This passion and commitment flow through all of our work.

HELEN WINTER, CO-FOUNDER & Chief Executive Officer

Helen is an avid certified mediator and lawyer. She previously worked as a mediator with L. A. Superior Court and consultant with OnDeckMediation where her expertise included anti-discrimination law. In addition, her experience includes working with the United Nations Office of the Ombudsman and Mediation Services where she analyzed and addressed systemic issues within the organization. She is also an ambassador with International Justice Mission in Germany. Helen holds a law degree with a focus on International Public Law and Human Rights Law from Heidelberg University, and LL.M. with a specialization in Dispute Resolution from Pepperdine’s famous Straus Institute. In her mediation practice, Helen Winter mostly deals with intercultural disputes. She is also pursuing a Ph.D. program in Alternative Dispute Resolution at European University.


Sebastian is a globally educated medical doctor, clinical researcher, social entrepreneur, and health policy analyst. Before co-founding R3SOLUTE and launching the M3NTAWARE Program in 2017, he worked in the Division of Health Systems & Public Health at WHO Europe and, later, the Division of Science Policy & Capacity Building at UNESCO Headquarters. Beyond the clinical domain, his work includes academic research, policy design, mental health literacy training, public speaking, and the publishing of numerous articles in the field. Sebastian completed a B.Sc. (1st Hons) in Neuroscience from King’s College London (’13) and went on to earn his M.D. (with distinction) from Charité Universitätsmedizin Berlin (’20). A current Ph.D. candidate, Sebastian is pursuing joint doctoral research at both Charité Berlin and the Mass General Hospital Cancer Center at Harvard Medical School.

MUHAMAD NAANAA, Chief OUTREACH officer & shareholder

Muhamad comes from Syria and is currently obtaining a degree in the fields of law and politics in Berlin. In addition, to his contributions as a journalist, he has been to Greece several times, being involved with work in a refugee camp. He has extensively advocated for the topic of refugee rights and is actively promoting a peaceful togetherness between different cultures.


Felix is a Psychologist (M.Sc.)and certified mediator, who focuses on the public understanding of psychological dynamics and the psychology of interpersonal relationships in -and between groups. During his studies at Freie Universität he did research on the assessment of revenge fantasies and dealt with both successful and problematic group processes, such as teamwork and mobbing. He utilizes applied social psychology in various stations, where he developed and implemented workshops on topics such as mobbing prevention or dealing with acute stress. Besides his engagement for R3SOLUTE he works for a Berlin-based organization consultancy with a focus on occupational and health psychology.


Julie Gabrielsen has a B.Sc. in social work from Oslo Metropolitan University, with specialization in child welfare in a minority perspective. During her studies, she was an intern in the largest Norwegian Labour and Welfare Administration office, working with issues surrounding unemployment and administering social and economic benefits. She is currently obtaining her M.A. in Intercultural Conflict Management at Alice Salomon University of Applied Sciences. During her time in Germany, Julie has worked in an NGO in Berlin and Potsdam, that reinforces social-, political-, and empowerment work in Refugee shelters. Moreover, she has worked as a coordinator for a Red Cross women’s language center in Norway, where she was responsible for project planning, volunteer management, social environmental work, and communications.


Cassandra has a Bachelor in Political, Economic, and Social Science from Sydney University and is currently completing her Masters in Intercultural Conflict Management at Alice Salomon Hochschule University in Berlin. Cassandra previously worked as a program assistant for the World Bank Group in Australia and has also volunteered with various social justice NGOs including Amnesty International NSW, Australia helping at local campaigns focused on refugee and asylum seeker rights, indigenous rights, and the environment; Yellow House in Kuala Lumpur, Malaysia providing assistance to the Afghan refugee community center and teaching English to Rohingya refugee children; as well as Parliament on King, a café in Australia that trains refugees and asylum seekers in hospitality and social skills. She is excited to join R3SOLUTE’s social media team and outreach.


Judith is currently enrolled in a Masters in Intercultural Conflict Management at Alice Salomon Hochschule in Berlin. In addition, she is about to complete a one-year long training to become an Intercultural Mediator and has worked in various refugee shelters in Berlin for almost two years. On top of that Judith is actively learning Arabic and Turkish languages. In the past she has lived in Istanbul where she was enrolled in different projects, mainly working with refugee communities. Judith completed her undergraduate studies in Politics and International Relations in Aberdeen, Scotland.

Johannes Graaf, Fundraising & Development Officer

Johannes is a high-school teacher in Berlin, Neukölln. During his master’s studies at Humboldt-University he focused on educational theories about Multicultural Education and processes of othering in social contexts. In the past years he has been involved in multiple charity projects for refugees in Berlin. Johannes has previously worked in Lebanon and the Palestinian territories, speaks fluent Levantine dialect (شامي) and has a good command of Modern Standard Arabic. Johannes is excited to work together with the fundraising team and help with didactic concepts and language support.


Martin is a physician with a passion for business and economics. While completing his medical degree at Leipzig University, he gained initial business experience as a member and later chairman of Campus Inform e.V., a student-run management consultancy, which also allowed him to work with non-profit organizations and understand their specific needs. His time at A.T. Kearney and Bayer Vital later enabled him to expand his experience on a professional level. Furthermore, Martin has a background in medical research, having been a co-author of multiple publications and presenter at various conferences, having spent time doing research at Harvard Medical School and currently conducting research in radiology at Leipzig Heart Center to obtain his doctoral degree.

Brigitte Hallbauer, Administrative Manager

Brigitte is currently studying to become a Non-Medical Practitioner (Mental Health). She supports R3SOLUTE administratively. This includes helping with the day to day business and to sit in on R3SOLUTE`s Peer Mediation and M3NTAWARE Workshops. This can creatively contribute to the writing of her final paper.
She is especially interested in working with traumatized individuals.
Brigitte has extensive administrative and communicative experience working previously as secretary of a chief physician at the Charité in Berlin.


Eric Martin is an Associate Professor of Management in the Managing for Sustainability Program at Bucknell University. Martin’s research focuses on inter-organizational partnering across the public, private and nonprofit sectors. A Returned Peace Corps Volunteer and Fulbright Scholar, much of his work is focused on efforts to improve the delivery of international development and humanitarian assistance. He has spent a great deal of time in Central, Eastern and Southern Europe studying the change in many different venues. His work has appeared in a variety of journals that span the public, private and nonprofit divide including Disasters, Journal of Management Inquiry, Nonprofit and Voluntary Quarterly, Public Management Review, International Public Management Journal, Organization Studies and Voluntas.


Kyle is a dedicated international development and conflict resolution professional. He previously worked with the United Nations Office of the Ombudsman and Mediation Services where he analyzed systemic organizational conflict for Assistant Secretary General Johnston Barkat. In addition, his experience includes three years of women’s empowerment and business development work in West Africa. He holds a B.S. in Business Administration from Bucknell University and an M.S. in Conflict Resolution and Negotiation from Columbia University. Kyle is currently a Business Development Specialist with Bosh Bosh Inc, a Liberian NGO focused on girls education and empowerment.


Jack is a dynamic strategy and management specialist. He previously worked at Vantage Partners, a global consultancy founded from the Harvard Negotiation Project, where he specialized in strategy, negotiation, and partnership management for over seven years. His experience includes leading enterprise change initiatives, conflict interventions, and executive training programs with Fortune 1000 firms and public agencies. He holds a B.S. in Systems Science from the University of Pennsylvania and is completing his final year of M.S. in Conflict Management at Columbia University.