Staff

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Harriet McCallum has served as Mannifera's Executive Officer since 2020. With over two decades of experience, she has led multi-disciplinary teams, fostered cross-sector collaborations, and driven forward advocacy projects across the public health, local government, philanthropy and NGO sectors in Australia and South East Asia. Harriet transitioned into the philanthropic sector out of recognition for the pivotal role philanthropy plays in supporting civil society and convening diverse collaborators for systemic change. Prior to joining Mannifera, Harriet led community resilience initiatives at the Lord Mayor's Charitable Foundation, pioneering long-term, multi-sector efforts addressing health disparities worsened by climate change. Earlier in her career, Harriet worked as a social worker and advocate with refugee and asylum seeker communities and victim/survivors of sexual assault and family violence, leading teams in Melbourne and Cambodia. She also managed local government youth, family and early years teams in Melbourne's West.  Harriet holds degrees in Arts and Social Work from the University of Melbourne.

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Tambelin has over 15 years' experience working for organisations committed to a more inclusive, just and sustainable world. Prior to joining Mannifera, she led communications teams at the Australian Environmental Grantmakers Network (AEGN), Social Ventures Australia (SVA) and the Parenting Research Centre/Raising Children Network. 

Tambelin is fascinated by the political process and its impact on people's lives, and believes philanthropy is uniquely placed to spur initiatives that bring about positive systems change. She has qualifications in political economy, government, public relations and counselling and has studied a number of courses through the Centre for Social Impact.

Members

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First Nations Advisors

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Liandra Gaykamaŋu (she/her) is a Yolŋu woman from North-East Arnhem Land who is currently lives in Darwin. Liandra is the founder and creative director of Liandra Swim, an eco-conscious, fast-growing, internationally recognised designer swimwear label that fuses contemporary Aboriginal art and swimwear. Liandra is an Executive Director of Enterprise Learning Projects where she was, until recently, co-CEO. ELP is an Aboriginal controlled not-for-profit that provides tailored on-Country business support to remote Aboriginal and Torres Strait entrepreneurs. Liandra is a Board Member of First Australians Capital and is a qualified English/History high school teacher, with teaching stints in metro New South Wales and the remote Northern Territory.

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Kezia Jacobs-Smith is a Whadjuk Noongar woman with strong connections throughout Noongar country and networks nationally and internationally with First Nations people. Kezia is a member of the Advisory Council for Indigenous-led Fund, the Noongar Charitable Trust. Kezia is currently an Indigenous Business Officer for Supply Nation, covering the audit and certification of Aboriginal and Torres Strait Islander owned businesses in WA. She also has extensive experience in Aboriginal Heritage management and protection and has experience working across sectors including local and federal government. Kezia is passionate about supporting capacity building and economic growth opportunities for First Nations peoples

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Adrian is a Gooreng Gooreng man of South East Queensland living on Yorta Yorta country. Adrian is the Lead, First Nations Investment Strategy at a private philanthropic trust. Adrian is often referred to as a social entrepreneur with extensive experience in both the First Nations space and establishing ‘green field’ start-ups. This has included founding Chief Executive Officer of Ganbina (a highly successful Indigenous school-to-work transition program empowering Indigenous communities to achieve true social and economic equality); founding Co-Chair of First Australians Capital (established to provide development and capital to Indigenous social enterprises); founding Board member Children’s Ground and founding Board member Australian Centre for Rural Entrepreneurship (ACRE).

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Craig is a proud descendent of the Bidjara people who has enjoyed an extensive senior executive career in both private and public sectors, and over the past 15 years in Indigenous economic development and impact has deep experience working with Indigenous business, in terms of supporting 'investment readiness' and delivering Indigenous investments with a long-term positive impact. Craig is a Board Director of Australian Native Food and Botanicals, Queensland South Native Title Services and is an Executive in Residence at Griffith University. He was recently appointed Executive Director of Firesticks Alliance

Infrastructure Partners

Become a member

Members magnify their impact through the power of collective giving. They also benefit from opportunities to connect with and learn from one another, as well as our network of civil society and First Nations-led partners across Australia.