Born in Bucharest, Grigore joined the academy of Dinamo București at age eight. On 3 April 2018, shortly before turning 19, he made his professional debut in a 1–0 Liga I away victory over Botoșani.[1]
On 15 July 2022, following Dinamo București's relegation to the Liga II, FC U Craiova announced the signing of Grigore on a three-year contract,[2] although it was later revealed to be a loan. On 9 March 2023, after terminating his deal with FC U Craiova, he signed a contract until the end of the season with fellow Liga I team Petrolul Ploiești.[3]
Grigore returned to Dinamo for the 2023–24 season, but after only seven games played, he was released at the end of the year.[4] On 7 August 2024, he signed a one-year deal with Spanish Segunda División side CD Eldense.[5]
^"Ricardo Grigore a semnat cu Știința" [Ricardo Grigore has signed with Știința] (in Romanian). FC U Craiova 1948. 15 July 2022. Retrieved 10 March 2023.
^"Bun venit, Ricardo Grigore!" [Welcome, Ricardo Grigore!] (in Romanian). FC Petrolul Ploiești. 9 March 2023. Retrieved 9 March 2023.