Sheffield Wednesday Cadamarteri joined the
Sheffield Wednesday youth team at the age of 8. In October 2021 he scored 4 goals to help the club's under-18 team to a 6–5 win, having come back from losing 5–1. In January 2022 he was linked with a transfer to a
Premier League club, and later that month he spoke about the challenge the youth team was facing in the
FA Youth Cup. In February 2022 he was again linked with a transfer away to the Premier League. Cadamarteri signed his first professional contract on 8 June 2022. He made his senior debut in the
EFL Trophy against
Leicester City U21 on 18 October 2022. He then returned to the under-18 team, and the under-21 team, although continued to be involved around the first-team, but manager
Darren Moore said he was not ready for first-team football yet. The club also rejected loan offers for him. He suffered an injury later that season, undergoing surgery, and being ruled out for the rest of the campaign. He missed part of the 2023–24 pre-season whilst recovering from the injury. He started the season playing with the under-21s, with the club later saying that they would not rush him into the first-team. He made his league debut on 11 November 2023, appearing as a half-time substitute in a 4–0 defeat, and was praised by manager
Danny Röhl. His first senior goal came against
Blackburn Rovers helping his side win 3–1. After impressing Röhl, he signed a new four-and-a-half-year contract at the club on 11 December 2023. After starting every game, scoring three goals and getting one assist for the month of December, Cadamarteri won the EFL Young Player of the Month award. On 28 August 2024, it was announced that Cadamarteri had signed a season-long loan with
League One side
Lincoln City. He made his debut on 31 August 2024, coming off the bench in a 1–0 win against
Stevenage. His first goal came against
Cambridge United scoring the second in a 2–0 win. He was ruled out for the remainder of his loan in March with a groin injury, having already struggled for game time in the second half of the season due to the same injury. He played a total of 31 times scoring 8 goals across all competitions during his season-long loan spell. His first goal on after his return was the equaliser away to
Wrexham in a 2–2 draw.
Wrexham On 2 February 2026, Cadamarteri joined Championship side
Wrexham for an undisclosed fee, signing a contract until 2029. ==International career==