[1] He then moved to Minas Gerais to get a master's degree and worked at América Mineiro's youth schools and as an assistant for Olympic.

In May 2005, Giacomini returned to América and was named manager of the under-15s, but left in April 2006 to work at Cruzeiro's scouting area.

He returned to his former role after the arrival of Diego Aguirre, but was again interim after the dismissal of Marcelo Oliveira prior to the second leg of the 2016 Copa do Brasil Finals;[6] he managed to achieve a 1–1 draw against Grêmio, but his side lost 4–2 on aggregate.

[8] The following 27 January, he was named in charge of Coimbra,[9] achieving two consecutive promotions in the lower divisions of the Campeonato Mineiro, both as champions.

On 11 August 2021, Giacomini returned to América Mineiro, now as a permanent assistant manager of the main squad.