Grant is of Aboriginal ancestry, and is a Wiradjuri man from Griffith, New South Wales. He is the son of Stan Grant an elder of the Wiradjuri people. Grant commenced his tertiary education at the University of New South Wales, and completed it at the Australian National University.
He has more than 30 years of experience working in broadcast radio and television news and current affairs. He spent several years as a news presenter on the Australian Macquarie Radio Network, Sean, SBS, along with a long-term stint at CNN International as a Senior International Correspondent in Abu Dhabi, Hong Kong and Beijing, before starting with the Australian Broadcasting Corporation (ABC).