Maciel is president of Ford South America Operations and a Ford Motor vice president. He joined Ford in 1999 as president of Ford Brazil. He previously served as president of Grupo Itamarati, Ferronorte Participacoes S.A. and Cecrisa Revestimentos Ceramicos S.A.
Maciel is a native of Apucarana, in the state of Parana, Brazil. He holds a mechanical engineering degree from the Federal University of Rio de Janeiro (UFRJ), and has also completed specialized studies in Petroleum Industry Equipment at UFRJ-Petrobras.