Five Oaks Consulting

Five Oaks Consulting:


Tosca Bruno-van Vijfeijken
Principal Consultant

Five Oaks Consulting 

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Between Power and Irrelevance: The Future of Transnational NGOs

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.

Tosca Bruno-van Vijfeijken

Get the experience and knowledge you need to run your high impact organizations

Tosca Bruno-van Vijfeijken has dedicated her three-decade career to international development and civil society issues. After working as an international development practitioner for 16 years (with a think tank, the World Bank, United Nations and NGOs), she turned into an ‘accidental pracademic’. Tosca 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. Since 2019, she has returned to practice as the owner and Principal Consultant of Five Oaks Consulting – named after her difficult-to-pronounce Dutch last name :).

Tosca has done extensive work with mid-sized to large INGOs by directing leadership development training programs, including executive coaching. Her work extends to change leadership and management, including organizational level evaluations.

Get the resources you need to better run your organization

Virtual Team Leadership Essentials

How you can rediscover joy and motivation in managing your virtual team

Get my co-authored book 

Between Power and Irrelevance:

The Future of Transnational NGOs

This book helps identify the problems and that will helps readers evaluate and formulate strategies for adapting transnational NGOs for the future

Subscribe to our podcast

NGO Soul + Strategy

 A podcast for leaders of NGOs and other philanthropic organizations who are not satisfied with the status quo, are ready to look change right in the eye and who see themselves as leader-as-learner. Available wherever you get your podcasts.

Clients we have worked with

What others have to say about us

Tirana Hassan

Director, Crisis Response, Amnesty International

Tosca’s meticulous preparation as well as ability to design training that is rooted in academic literature while balanced with the pragmatism of a practitioner resulted in a unique and enriching learning experience.