[8] Joint won her first ITF Circuit title at the 2023 Gold Coast Tennis International in the doubles draw, partnering Roisin Gilheany.

[16] Having announced her decision to turn professional,[8] Joint began the 2025 season with a victory over fellow Australian Maddison Inglis at the Brisbane International,[17] before falling to 10th seed Victoria Azarenka in three sets in the second round.

[18] The following week, she reached her first WTA semifinal at the Hobart International by defeating Olga Danilović[19] and then fourth seed Magda Linette for her maiden win against a top-50 ranked player,[20] before overcoming wildcard entrant Sofia Kenin in the quarterfinals.

[22] Joint was given a wildcard entry into the main draw at the Australian Open, but lost to seventh seed Jessica Pegula in the first round.

[23] Partnering Taylah Preston, Joint won her first WTA 125 doubles title at the Cancún Open, defeating Aliona Bolsova and Yvonne Cavallé Reimers in the final.