Born in Lisbon, Tralhão began his coaching career with the youth teams of Real Massamá and Benfica, joining the latter in 2007. He was assistant to his younger brother João Tralhão with Benfica under-23, and succeeded him when his brother left for AS Monaco in 2018. He led Benfica to fifth place in the new Liga Revelação [pt] in 2018–19.[1]
In July 2019, Tralhão left for another under-23 team, joining Cova da Piedade.[1] In December, first-team manager Jorge Casquilha left the club and Tralhão succeeded him at the last-placed team in Liga Portugal 2;[2] his debut on 21 December was a goalless draw away to Leixões,[3] and he led the Almada-based side to two defeats in January before the appointment of João Alves.[4]
Tralhão joined Vilafranquense as assistant manager to his brother[5] in the 2020–21 Liga Portugal 2 before returning to Benfica's under-19 team, again as number two. In June 2024, he moved to Torreense as under-23 manager.[6] On the first day of the year 2026, he was confirmed as first-team manager in the second tier, succeeding Vítor Martins.[7] Four days later he won 1–0 on his debut away to Vizela, before a 3–1 victory on 11 January at home to União de Leiria, eventually winning his first four games.[8]