Career
De Domenico was initially elected the second ACT Legislative Assembly in 1992, and elected to represent Brindabella in the Assembly in 1995 general election. De Domenico resigned from the Assembly on 30 January 1997 to take up a position in the private sector and, during his parliamentary career, served as Deputy Chief Minister of the Australian Capital Territory, Minister for Industrial Relations, Minister for Urban Services and Deputy Leader of the Opposition. Between 2000 and 2003, De Domenico was based in Milan, Italy, as a trade commissioner.
And since 2004, has been Executive Director of the Victorian Division of the Urban Development Institute of Australia.
Prior to his election, De Domenico was President of the Canberra Chamber of Commerce.