He won gold medals at the 2021 Islamic Solidarity Games and 2023 Jeux de la Francophonie in the 4 × 400 m relay.

[2] Dair's first senior international competition was at the 2022 Mediterranean Games, where he won the silver medal in the 400 m behind João Coelho.

[3][4] Later that year at the 2022 Islamic Solidarity Games, Dair won his first gold medal in the men's 4 × 400 m relay, anchoring the team following Saad Hinti, as well as a silver in the mixed relay.

[2] Dair saw most of his international success in the 2023 season, starting at the 2023 Meeting Hauts-de-France Pas-de-Calais indoors.

[5] Outdoors at the 2023 Arab Games, Dair won silver medals in both the individual 400 m and the 4 × 400 m relay.