As an amateur Smith won multiple national titles at the junior and senior level,[2] including the 2018 ABA Championships at light-welterweight.

[8] After deciding to forgo the 2020 Olympics – due to rule changes regarding weight categories, along with several injuries suffered throughout his amateur career – Smith signed a promotional contract with Eddie Hearn's Matchroom Boxing in May 2019,[9] making his professional debut two months later on 10 May, scoring a four-round points decision (PTS) victory over Luka Leskovic at the Motorpoint Arena in Nottingham.

[10] In his next fight he defeated Ibrar Riyaz with a second-round stoppage via corner retirement (RTD) on 21 July as part of the undercard for Dillian Whyte vs. Oscar Rivas.

[15] His first fight of 2020 came against Benson Nyilawila in March, winning by fourth-round TKO in a bout that was streamed live on Facebook.

[17][18] He won the fight by knockout in the fifth round with body shot, Winning The Vacant WBC Silver Super Lightweight Title.