Born in Santa Maria de Lamas, Aveiro District, Betinho signed for Sporting CP at the age of 11, from local C.F.

[6] Late into the following month he made his first Primeira Liga appearance, replacing André Carrillo in the 74th minute of an eventual 2–2 home draw with G.D. Estoril Praia.

[16][17] On 1 September 2014, Betinho moved to English Championship side Brentford on a season-long loan, to cover for the injured Scott Hogan;[8][18] manager Mark Warburton had previously been impressed by his performances in the NextGen Series, a competition he helped organise, and described the player as "quick, strong and technically gifted".

[8] International clearance problems meant he was only included in the squad for the match against Norwich City on 16 September, and he made his debut in the 0–3 home loss by replacing Stuart Dallas after 77 minutes.

[20] Ultimately, he failed to win a call before the end of the season and instead spent time in the development squad, scoring three goals in six appearances.

He had a prolific goalscoring spell with the under-19 side, scoring 14 goals in 20 games and topping the 2012 UEFA European Under-19 Championship qualification chart with ten strikes.

[30][31] Betinho was part of the squad that competed in the 2013 Toulon Tournament, helping the team to a fourth-place finish in spite of failing to score in three appearances.