A youth product of
Club Brugge, Fadiga joined
Volendam on loan for the 2019–20 season. He made his professional debut with Volendam in a 1–1
Eerste Divisie tie with
Helmond Sport on 9 August 2020. Fadiga signed with
Heracles Almelo in the Eredivisie on 19 July 2020. In the summer of 2023, Fadiga experienced heart irregularities and was not allowed to continue playing in France by the
French Football Federation due to their "zero tolerance" policy in that respect, even though he received a clean bill of health by cardiologists. As a free agent, on 8 August 2023 he signed a three-year contract with
Gent in Belgium, his father played for the club 15 years prior. Fadiga had a mini defibrulator installed after collapsing during a break in play in Gent's game against
Standard Liege on 10 November 2024. Fadiga had just been involved in an aerial collision. A heart rhythm disorder was diagnosed while detained in hospital. On the 10th June 2025 he signed for
Aris for a fee of 1.5 million euros agreeing a three-year deal ==International career==