The appointment of ambassador Sinodinos serves as a key pillar for Hypersonix to strengthen the company’s leadership as it expands its presence in the United States and deepens engagement across allied defence ecosystems.
Hypersonix said Sinodinos would lead the company’s representation in the US and support its strategic outreach across defence, government and investment communities at a time of growing allied interest in sovereign hypersonic capabilities.
Sinodinos brings extensive experience spanning government, diplomacy, defence policy and finance. As Australia’s ambassador to the United States, he played a key role in advancing Canberra’s strategic priorities, including engagement on AUKUS, the Quad and the Indo-Pacific Economic Framework.
His public service career includes senior roles at the highest levels of government. He served as a senator for NSW and spent nine years as chief of staff to former prime minister John Howard.
During his time in Parliament, he held ministerial and cabinet positions, including assistant treasurer, cabinet secretary and minister for industry, innovation and science.
Beyond government, Sinodinos has built a substantial career in the private and not-for-profit sectors. He has held senior roles in investment banking at Goldman Sachs and business banking at NAB and previously chaired The Asia Group’s Australia Practice.
He is currently a board member of The Principals Funds Management and a special adviser to minerals investor Cove Capital. His pro bono work includes serving as chairman of the United States Studies Centre at the University of Sydney and as a board member of the Cancer Care Foundation Limited.
Sinodinos was appointed an Officer of the Order of Australia for his service to politics, economic policy and reform, and to the Greek community. He holds honorary doctorates in letters and business from the Universities of Newcastle and Sydney.
Hypersonix said Sinodinos’ deep relationships across US government, defence and investment circles would be critical as the company seeks to build trusted partnerships, navigate complex policy settings and accelerate collaboration with allies.
The appointment comes as Hypersonix positions itself to scale Australia’s sovereign hypersonic technologies into allied markets, reflecting the growing strategic importance of advanced strike, launch and space-adjacent capabilities across the Indo-Pacific and beyond.