Career
Martins was born in in Torres Vedras, Portugal. He made his professional debut with Benfica Bachelor in a 2–1 away loss against Naval. On 30 January 2013, Martins signed with Belenenses.
He represented Portugal U19 in the 2012 Union of European Football Associations European Under-19 Football Championship, where he played in all three of Portugal"s group fixtures, scoring against Estonia in the opening game.