Siosiua’s career highlights include the seven years he served as the Minister of Finance
and Chief Commissioner on Revenue for the Government Tonga. This followed a decade as Governor of the Reserve Bank of Tonga throughout the 1990s. He has subsequently spent 14 years as a consultant working for the Asian Development Bank, the World Bank, the International Monetary Fund, the Pacific Financial Technical Assistance Centre, UNDP and the University of the South Pacific, working and living throughout the Pacific. Australia, Hawaii, Fiji, Nauru, Solomon Islands and Tuvalu, as well as Tonga have all directly benefitted from his skills and breadth of experience.
Siosiua completed a BCA and MCA at Victoria University of Wellington and studied for a 2 nd Masters Degree (Development Finance) at Birmingham University in the UK. He has published widely on topics related to his expertise in public sector economic
management, e.g. asset management, debt sustainability, and taxation.
Siosiua thrives on formulating and implementing national strategic plans, economic and financial reform policies, public financial management reforms as well as providing advice to international development agencies, governments, and central banks. He has maintained contacts at senior levels in many governments and regional agencies and has taken a particular interest in climate change negotiations and seabed mining matters.