He served as the Chairman of the executive committee of the Ville de Montréal and was the city's second-ranking official.
In January 2004, Zampino was appointed by Mayor Tremblay to preside over the committee on finance, administrative and corporate services and strategic management.
[9] His efforts paid off and Zampino was re-elected as city councillor and borough mayor and was re-confirmed as chairman of the executive committee.
[15] On May 17, 2012, Zampino was charged with fraud, conspiracy and breach of trust after a two-and-a-half-year long investigation related to awarding municipal contracts.
[16] The Faubourg Contrecoeur fraud trial, presided by Quebec Court Judge Yvan Poulin alone, began in February 2016, but was delayed.