Barcelona in 2012 Born in
Valencia,
Valencian Community, Grimaldo joined
Barcelona's youth system in 2008. He made his official debut for
the B-team on 4 September 2011, starting in a 4–0 away win against
Cartagena at the age of 15 years and 349 days and becoming the youngest player ever to appear in a
Segunda División game, before he was surpassed by
Lamine Yamal in 2023. On 23 February 2013, Grimaldo suffered a serious knee injury, being ruled out for the remainder of
the season. He returned to action in January of the following year, appearing in 14 matches to help his team finish in third position. On 13 September 2014, Grimaldo scored his first professional goal, netting his side's last in a 3–2 success at
Alavés. In
a campaign which saw the team relegated, he netted four times in 36 matches; he and
Sergi Palencia were
sent off on 25 April 2015, in a 2–1 win over
Ponferradina at the
Mini Estadi.
Benfica On 29 December 2015, as his contract was about to expire, Grimaldo signed with Portuguese champions
Benfica until 2021, for €1.5 million. Barcelona has the right to a percentage of a future sale. Grimaldo played his first game with his new team on 26 January 2016, coming in as a 62nd-minute
substitute for
Sílvio in a
6–1 away routing of
Moreirense for the
Taça da Liga. He debuted in the
Primeira Liga on 29 February, featuring the full 90 minutes in a 2–0 home win against
União da Madeira; he only appeared once more in the latter competition until the end of
the season, filling in for suspended
Eliseu in a 4–1 victory over
Nacional also at the
Estádio da Luz that sealed the club's third consecutive national championship. He remained in the team for the
league cup final on 20 May, the 6–2 defeat of
Marítimo at the
Estádio Cidade de Coimbra. Grimaldo's
first full season began on 7 August 2016, as he started in a
3–0 win against
Braga for the
Supertaça Cândido de Oliveira in
Aveiro, assisting
Franco Cervi for the opening goal. On 2 October he scored his first goal for the club, a
free kick to conclude a 4–0 home triumph over
Feirense; on 28 May 2017, he played the full 90 minutes in
the final of the
Taça de Portugal, won after defeating
Vitória de Guimarães 2–1. Grimaldo's maiden appearance in the
UEFA Champions League took place on 13 September 2016, when he played the entire
1–1 group stage home draw to
Beşiktaş. His first goal in the competition came during the same stage but on 2 October 2018, in a
3–2 away win over
AEK Athens; he repeated the feat against the latter opponent on 12 December in the return fixture, his 30-meter
free kick in the 88th minute helping to a 1–0 victory.
Bayer Leverkusen On 21 May 2023, Grimaldo signed a four-year contract with German club
Bayer Leverkusen on a
free transfer. On 12 August, he debuted in a
DFB-Pokal match against
FC Teutonia Ottensen. On 15 September, he scored his first goal for the club, a direct free kick from the edge of the box away at
Bayern Munich in a 2–2 draw. On 14 April 2024, Leverkusen beat
Werder Bremen 5-0 to secure the first Bundesliga title in the club's history. Grimaldo assisted the fifth goal of the game. Grimaldo was named in the
2023–24 Bundesliga's team of the season, finishing as the top assist provider in the Bundesliga with 13 assists and being involved in more goals than any other Leverkusen player despite playing as a left-back. Grimaldo was later nominated for the
2024 Ballon d'Or for his performances in Leverkusen's unbeaten
league and cup double. On 13 September 2025, Grimaldo scored two free-kicks in a 3-1 win over
Eintracht Frankfurt, in
Kasper Hjulmand's first match as Leverkusen coach. This was the first time in over a decade that a player had scored two free-kicks in one Bundesliga game. On 18 October, Grimaldo scored another brace, in a 4-3 win over
Mainz. He was nominated for the Bundesliga Player of The Month award for October. ==International career==