On 1 September 2021, he joined Portuguese club Marítimo on loan.[2] On his Primeira Liga debut for Marítimo on 13 September 2021, he scored a goal in a 2–2 draw against Arouca.[3]
Ricardinho is the son of Ricardo Viana, corporal of the military police of São Paulo. He has 2 sisters. In 2021 he lost his father and his grandfather to the COVID-19.[7]