Domingos Alexandre Martins Costa

International career Alex earned three caps for Portugal under Luiz Felipe Scolari in 2005. His debut was on 4 June at home to Slovakia in the 2006 FIFA World Cup qualifiers, starting the 2–0 win at the Estádio da Luz, followed four days later by a 1–0 away victory against Estonia.

Coaching career On 3 July 2013, Alex announced his retirement from professional football at the age of nearly 34, immediately starting his managerial career with F.C. Felgueiras 1932 in the third division. He first arrived at the professionals in May 2014 after leading his team to safety, being appointed at Segunda Liga side Académico de Viseu FC.

Alex won his first game at Académico, 4–1 at home to Portimonense S.C. in the first round of the Taça da Liga on 27 July 2014; they then lost 5–4 on aggregate against C.F. Os Belenenses after winning the first leg 3–1. He left by mutual consent on 12 November, being one point above the relegation zone after 16 matches.

After three years in charge of the under-19 team, Alex succeeded Vítor Campelos at Vitória de Guimarães B in June 2018. The side suffered relegation to the third tier at the end of the campaign, and he was fired on 9 December 2019 while in sixth place.

Following a spell as assistant to compatriot Jaime Pacheco at Zamalek SC of the Egyptian Premier League, Alex ran for Vitória's presidency in March 2022, losing to António Miguel Cardoso; They were relegated in last place, ending a 15-year spell in division two.

Alex was appointed at Liga 3 club Amarante F.C. on 17 October 2025, following the dismissal of Eurico Couto due to poor results. He eventually helped it achieve a second-ever promotion to the professional leagues, the first in 37 years, being voted Manager of the Month three times in the process.

On 17 July 2026, Alex became head coach of second-tier Portimonense.

Career statistics Club

International

Honours Player Moreirense Segunda Liga: 2001–02

Benfica Taça de Portugal: 2003–04 Supertaça Cândido de Oliveira: 2005

Vitória Guimarães Taça de Portugal: 2012–13

Manager Amarante Liga 3: 2025–26