He began his career in 2003 as a sub-prefect in Nancy, then joined the Ministry of Foreign Affairs as a chargé de mission for Turkey and Cyprus. From 2008 to 2010, he was Chief of staff to the Minister of Trade at the Ministry of Finance. In 2011, he joined the Home Office as security Advisor to the Minister. From 2012 to 2015, he was the financial Director of the Paris Police Prefecture. In 2015, he became Chief financial Officer at the National Police headquarters. In 2019, he became the Head of Group executive coordination, public affairs and security at Suez. For ten years, he was a lecturer in economics at Sciences Po.
Today Sébastien Daziano is Senior Executive Vice President, Strategy & lnnovation at Veolia.