[5] On 28 October 2020, the midfielder made his professional debut for Empoli, coming on as a substitute in a 4–2 Coppa Italia win against Benevento; during the victory, he assisted Leonardo Mancuso's closing goal.

[8] In the following season, after featuring in the UEFA Youth League,[9] Baldanzi was officially promoted to the first team, together with teammates Jacopo Fazzini and Duccio Degli Innocenti.

In June 2022, he was included in the squad that took part in the 2022 UEFA European Under-19 Championship in Slovakia,[17] where the Azzurrini reached the semi-finals before losing to eventual winners England.

[3][25] Primarily a left-footer, he can also use his weaker right foot as well,[4][25] and represents a frequent attacking threat, thanks to his vision, his dribbling skills and his shooting (both from short and long range).

[24][25][26] Rated as one of the best Italian prospects of his generation,[3] Baldanzi has been compared to Sebastian Giovinco and Papu Gómez,[4][27] although he cited Paulo Dybala as his biggest source of inspiration.