Born in Paranaguá, Paraná, Aal was known as just Allan as a player, and joined Coritiba's youth setup at the age of ten.

After being a regular starter, he moved to PAOK in June 2007, but terminated his contract six months later due to the club's financial problems, and returned to former side Rio Branco.

[1] After retiring, Aal started working at former side Rio Branco, before being named manager of Coritiba's under-17 team on 22 May 2012.

[8] Dismissed by Lusa on 6 November 2018,[9] Aal managed Nacional-SP for a short period[10][11] before being appointed at the helm of Cascavel, a club he was already linked in the pre-season but left to take over Nacional.

[21] On 19 June 2022, after suffering relegation in the 2022 Campeonato Paulista and a six-match winless run, Aal was sacked by Novorizontino.

[26] He was appointed in charge of Náutico for the 2024 season on 15 November,[27] but was dismissed on 30 March 2024, despite reaching the finals of the Campeonato Pernambucano.