[6] Tarimo was booked to face Serif Gurdijeljac for the vacant IBF International super featherweight title on 31 August 2019, at the Hala Pendik in Novi Pazar, Serbia, which was his first fight outside of Australia and Tanzania.
[8] Tarimo made his first IBF International title defense against Nathaniel May on 6 December 2019, at the ICC Exhibition Centre in Sydney, Australia.
[10] Tarimo made his second IBF International title defense against Paul Fleming on 16 December 2020, at the Bankwest Stadium in Parramatta, Australia.
[12] Tarimo faced the Commonwealth super-featherweight champion Zelfa Barrett in an IBF super featherweight title eliminator on 18 December 2021, at the Manchester Arena.
[14] On 3 February 2022, Tarimo announced that he would drop down to super bantamweight, stating: "I have made 130 too easily for a long time, and now I want to fight at my real weight".