Boldrin played as a junior for Slovan Liberec in the Czech Republic,[1] but spent the first part of his senior career in the lower leagues of native Brazil.

He ended the Liga I season with 32 matches and 6 goals, earning interest from better ranked clubs after scoring a double against defending champions Steaua București in May 2015.

During the 2015 summer transfer window, Boldrin signed a contract with FC Astra Giurgiu, rejoining his former Concordia coach Marius Șumudică.

[5] The following week Boldrin netted a goal in the UEFA Europa League third qualifying round's first leg against West Ham United, helping his team obtain a 2–2 away draw at Boleyn Ground.

[10] Regarded as a good free kick taker with great technical ability,[2] Boldrin operates primarily as a central midfielder and is capable of aiding his team both in attack and defence.