Early career Huijsen began playing with Costa Unida CF de Marbella before joining
Málaga's youth set-up in 2015, at age 10.
Juventus In May 2021, Huijsen joined
Juventus, playing for their U17s. Ahead of the 2022–23 season, he moved up the U19s and he scored six goals in 14 matches until November 2022. He also featured in two first-team friendlies against
Standard Liège and
Rijeka in December 2022. In early January 2023, Huijsen was promoted to
Juventus Next Gen, the reserve team of Juventus. He made his professional debut on 8 January, starting in a 2–1
league loss against
Pordenone. On 15 February, Huijsen scored his first two professional goals in the second leg of a
Coppa Italia Serie C semi-final match against
Foggia, helping his team win the tie on
penalties. On 2 April, he scored his first goal in
Serie C, in a 3–1 home loss to
Feralpisalò. In June 2023, Huijsen renewed his contract with Juventus until 2027. On 22 October, he made his
Serie A debut, coming off the bench in the 78th minute to replace
Federico Gatti in a 1–0 away win over
AC Milan. On 7 November, Juventus announced that Huijsen alongside his Next Gen teammate
Kenan Yıldız had been promoted to the first team.
Loan to Roma Huijsen was loaned to fellow Italian side
Roma on 6 January 2024 until the end of the 2023–24 season. He made his debut with the
Giallorossi the following day, playing the entire second half in a home league draw against
Atalanta. In early February, Roma's head coach
Daniele De Rossi excluded him from the team's UEFA list for the
Europa League knock-out phase. Huijsen scored his first Serie A goal on 5 February, sealing Roma's 4–0 win against
Cagliari.
Bournemouth On 30 July 2024, Huijsen was signed from Juventus by
Premier League club
Bournemouth on a six-year deal, for an initial fee of €15.2 million, which could rise to €18.2 million. He made his debut for the
Cherries on 17 August in a 1–1 draw against
Nottingham Forest, and won nine aerial duels. On 5 December 2024, he scored his first goal for the club, with a header in a 1–0 home win over
Tottenham Hotspur. He thus became the youngest-ever goalscorer for the club in the Premier League. On 19 June 2025, it was announced that Huijsen was one of six nominees for the PFA Young Player of the Year award for his performances in the previous season with Bournemouth.
Real Madrid On 17 May 2025,
La Liga club
Real Madrid announced the signing of Huijsen, with the player joining
Los Blancos on a contract until July 2030. The deal was worth £50 million (€59.5 million), with Madrid triggering his release clause. He was officially presented as a Real Madrid player on 9 June, receiving the number 24 shirt. Huijsen made his debut for the club at the
2025 FIFA Club World Cup in a
group stage match against
Al-Hilal on 18 June, which resulted in a 1–1 draw. He made his
La Liga debut for Madrid on 19 August 2025, in a 1–0 victory over
Osasuna. In February 2026, Huijsen faced allegations of racism after he reposted an image on Instagram containing derogatory comments mocking the eye shape of Asian people. Real Madrid published an apology attributed to the player on the club's official
Weibo account. ==International career==