Willem II Born in
Goirle, Mathieu began his football career at amateur club SV Triborgh. In 2003, aged 7, he was signed for the
Willem II youth academy. Mathieu was part of the Netherlands U16 squad. In the summer of 2013, Willem II manager
Jurgen Streppel selected ten players from the youth academy to be part of the first team in preparation for the new season. At the start of the competition it was announced that, together with two other youth players, Mathieu would be a permanent member of the first team for the rest of the season. On 23 August 2013, at the age of 17, he made his professional debut in a 3–0 home win against
Sparta Rotterdam replacing
Bruno Andrade in the 89th minute. On 28 August, it was announced that Mathieu had signed his first professional contract. Willem II signed him for three years. On 14 August 2014, it was announced that Mathieu was sent on loan to
Eerste Divisie side
FC Oss until the end of the season. There, he played almost all matches that season and contributed to the team winning a "period title". Upon his return to Willem II, Mathieu made his debut in the
Eredivisie for the club in August 2015. One day before the summer transfer market closed that month, the club sent Mathieu on loan to
Go Ahead Eagles for the remainder of the season, who had suffered relegation to the Eerste Divisie in the previous season. As of 1 January 2016, the club from
Deventer no longer needed him and he returned to
Tilburg.
Cambuur In July 2017, Mathieu signed a contract until mid-2020 with
Cambuur, who had signed him after he had experienced a strong season as part of the FC Oss team in 2016–17, where he had scored 10 goals and made 10 assists. Mathieu experienced a tumultuous time in Cambuur, serving three separate suspensions for the club in one year due to disciplinary issues.
Gorica In February 2019, he moved to the Croatian club
HNK Gorica where he signed a contract until mid-2022.
Noah In July 2023, Mathieu left
TOP Oss and signed a contract with
Armenian Premier League club
Noah. During his sole season with the club, he scored four goals across 35 appearances in all competitions. ==Personal life==