Chiaradía served in numerous posts in the Ministry of Foreign Affairs in subsequent years, as well as in Argentine Embassies in Canada, Germany, and the United States.

He returned to Buenos Aires in 1987 to accept an appointment as Chief of Cabinet to the Secretary of International Economic Relations, Carlos Bruno, and from 1988, served in the same capacity for the Foreign Minister, Dante Caputo.

[1] He was named Deputy Permanent Representative to the United Nations a year later by President Raúl Alfonsín's successor, Carlos Menem.

A career diplomat, Chiaradía served in a number of related posts for each of Argentina's short-lived governments in office over the next four years.

The acrimonious, June 2010 departure of Foreign Secretary Jorge Taiana prompted Chiaradía to resign, though he was reportedly persuaded against leaving his post by Taiana's successor, Héctor Timerman; this development, as well as the support enjoyed by Chiaradía's deputy at the trade bureau, Luis Kreckler, from Planning Minister Julio de Vido, led to Kreckler's appointment as Secretary of Trade, and to Chiaradía's succeeding Timerman as Argentine Ambassador to the United States.