Gomis is a youth product of CF Celtic Elche, Elche, Real Madrid, and Almería before moving to the youth academy of Atlético Madrid in July 2019. He was promoted to Atlético Madrid B for the 2021–22 season in the Tercera Federación, and helped the team earn promotion to the Segunda Federación that season.[1] On 17 December 2021, he signed his first professional contract with the club for 4 seasons.[2] He was part of Atlético Madrid's preseason squad in the summer of 2022, and made his unofficial senior debut with them in a friendly with CD Numancia in July 2022 where he was brought on as an outfielder as an emergency replacement.[3] He made his senior and professional debut with Atlético Madrid as a late substitute in a 2–2 La Liga tie with Villarreal on 4 June 2023.[4]
International career
Gomis was called up to the Spain U19s for a set of trainings in January 2022.[5]