She is fluent in Greek, Armenian, French, and English and was a well-known volunteer in Montreal's Park Extension District, before launching her political career.
Vision Montreal won a council majority in this election under Mayor Bourque's leadership, and Deros was appointed to the executive committee in November 1998 with responsibility for sports, leisure, social development, and neighbourhoods.
[9] In September 2000, Deros was appointed as a city representative on the newly formed Montreal Metropolitan Community regional government.
[10] In the same period, she supported Mayor Bourque's campaign to merge all Island of Montreal communities into a single municipal government.
In 2007, Deros led a successful campaign to prevent Montreal's historic Park Avenue from being renamed after former Quebec premier Robert Bourassa.
[16] Deros was re-elected to a fourth term in the 2009 municipal election and was given responsibility for cultural communities following an executive committee shuffle in November 2009.
The Montreal Gazette reported in February 2003 that Deros was considering a candidacy for the provincial Action démocratique du Québec.