Five Oaks Consulting:
FOR NGOs WHO LOOK CHANGE RIGHT IN THE EYE
Tosca Bruno-van Vijfeijken
Principal Consultant
Five Oaks Consulting
Work smarter, more effectively, and with more impact
Leaders of International NGOs partner with Five Oaks Consulting to help them achieve maximum effectiveness. Our expertise is bringing out the best in mid- to large-size, global INGOs through skillful change management, cutting edge leadership development and organizational effectiveness related practices.
Experience and knowledge for high impact organizations

With Five Oaks Consulting, you benefit from access to a full range of professional expertise that includes decades of international development and social justice experience. We understand the views, mindset and culture of transnational NGOs, and other forms of (Civil Society Organizations) CSOs and what it takes to optimize their organizational assets.
Our practice as thought leaders includes vast experience working inside and with think tanks, the United Nations, the World Bank, and academia, along with a wide range of NGOs.
Make the most of your organization
Each challenge we take on for our clients is grounded in rigorous, empirically researched frameworks and strategies that have been thoroughly investigated, tested and validated across the public (government and non-government) and private sectors. Our partners especially appreciate our reputation for honesty and integrity.
KNOWLEDGE
EXPERIENCE
RESEARCH
Our expertise includes
Organizational effectiveness
Change management and leadership
Leadership development
Organizational culture assessment and change
Organizational diversity and inclusion strategies
Organizational evaluation and learning approaches
Gender and leadership
Feminist leadership

Meet Tosca
Tosca Bruno-van Vijfeijken, Principal Consultant
Tosca Bruno-van Vijfeijken has dedicated her three-decade career to international development and civil society issues. For nearly 16 years she managed, and eventually led the Transnational NGO Initiative (TNGO Initiative) at the Maxwell School of Citizenship and Public Affairs at Syracuse University, USA, where her focus was on the governance, leadership and effectiveness of international civil society organizations.
Tosca has done extensive work with mid-sized to large INGOs helping to direct customized leadership development, including executive coaching. Her work extends to change leadership and management, including organizational level evaluations.
Clients we have worked with






















