 In the mid-1990s, Sy was Director of the Cabinet of Minister of State Abdoulaye Wade during Wade's participation in the government.He then became an adviser at the Ministry of Trade and the Craft Industry in October 1998, a technical adviser at the Ministry of Trade in April 2000, and the General Administrator of "Fondation Trade Point Sénégal" in August 2000.Entering the Senegalese government as Minister of Agriculture and Animal Husbandry on 6 November 2002, Sy's portfolio was modified in August 2003, when he was appointed as Minister of Agriculture and Hydraulics; he was then appointed as Minister of Agriculture, Animal Husbandry and Hydraulics in April 2004.