Executive Leadership Team
Jennifer Tierney
Role: Chief Executive
Jennifer is a passionate executive leader who has 20 years’ experience in the international humanitarian sector including more than five years’ experience in Executive Director/Chief Executive roles. She brings broad grassroots experience spanning Board governance, executive and international team leadership, in-country field program management, risk management, communications and fundraising.
Jennifer has most recently been the Executive Director at MSF Australia. Prior to joining MSF Australia, Jennifer has worked with UNICEF Australia, Synergos and as a strategic consultant with organisations including Amnesty International, Orbis, Concern Worldwide, and the Clinton Foundation. She was also a founding board member of The Alliance of International Medical Action (ALIMA) USA.
Dr Chrisanta Muli
FCMA, CGMA
Role: Director, Programs & Transformation
Areas of responsibility: International development, humanitarian programs, cross-agency collaboration
Chrisanta is an impact-driven feminist and is passionate about gender equality and social justice. With 20 years of experience in the international development sector as both a practitioner and academic, she has worked as a consultant for several NFP organisations. She has also been a senior lecturer at various Australian universities.
For four years, Chrisanta served as the CEO of One Girl, an organisation whose mission is to work and walk with girls and their communities to break down barriers that girls face in accessing quality education.
Emily Wigney
Role: Interim Director of Fundraising, Partnerships & Community
Areas of responsibility: Fundraising, public mobilisation, brand, supporter and community activation
Emily brings over two decades of experience in fundraising, brand, marketing, and supporter growth. She has worked extensively as a people leader across the not-for-profit sector and is deeply passionate about First Peoples’ self-determination and social justice.
Emily combines her commitment to accountability with a drive to challenge systemic norms, delivering innovative and proven solutions that create lasting impact.
Sarah Madacki
Role: Interim Chief Operating Officer
Areas of responsibility: Operations, finance, ICT, people and integrity
With over 25 years of experience — including a decade in the not-for-profit sector — Sarah has worked extensively across the Asia-Pacific region. Sarah brings a strong strategic, operational, and programmatic background, with expertise in operational leadership, structural transformation, and human resources.
