In 1983 he returns to Misiones after graduation and starts his political activism in the Integration and Development Movement (MID).

The formula Julio César Humada (PJ) - José Piro (MID) wins the election and two years later Schiavoni is appointed Undersecretary of Economics.

Its management carried out deep economic reforms in tune with the government of Carlos Menem: the Bank of Missions, the Insurance Institute, and Missionary Paper were privatized; In some locations, the drinking water and sewer service was concessioned, and a hydroelectric dam was put into operation under a private concession.

On December 21, 2001, after the resignation of President Fernando de la Rúa, he was appointed by Ramón Puerta, as Chief of the Cabinet of Ministers for two days.

In 2012, he was elected President of the National Council of PRO and Macri charged him with the mission of organizing a Republican Proposal nationwide until 2020.