Pirini joined the West Coast Waves of the Women's National Basketball League (WNBL) for the 2013–14 season.[5] She re-joined Waves for the 2014–15 season.[6] She was used sparingly over two seasons as a development player.[7]
For the 2015–16 WNBL season, Pirini joined the Adelaide Lightning.[5]
For the 2017–18 WNBL season, Pirini joined the Perth Lynx, once again as a development player.[7]
Pirini returned to the Adelaide Lightning for the 2018–19 WNBL season.[7]
In September 2024, Pirini played for the Townsville Fire during the pre-season in the WNBL Hoopsfest in Perth,[8] where she was named player of the game in one of her appearances, having 18 points and six rebounds.[9]
Pirini debuted for the Willetton Tigers of the State Basketball League (SBL) during the 2012 season.[10] She continued with the Tigers in the 2013 SBL season[11] and the 2014 SBL season.[12]
In 2015, Pirini played for the BA Centre of Excellence in the South East Australian Basketball League (SEABL).[5]
In 2016 and 2017, Pirini played for the Diamond Valley Eagles in the Big V, averaging 11.0 points and 3.6 assists in 2016 and 9.9 points and 3.8 assists in 2017.[7]
Pirini joined the Perth Redbacks for the 2018 SBL season.[13]
Pirini joined the Joondalup Wolves for the 2019 SBL season.[14] She continued with the Wolves in 2020 in the West Coast Classic.[15]
In 2021, Pirini joined the Lakeside Lightning, now in the NBL1 West, for the league's inaugural season.[5]
For the 2022 NBL1 West season, Pirini re-joined the Perth Redbacks.[5] She continued with the Redbacks in the 2023 NBL1 West season and the 2024 NBL1 West season.[5] She was named the NBL1 West Sixth Woman of the Year for the 2024 season.[16]
Pirini was set to join the Willetton Tigers for the 2025 NBL1 West season,[9] but ultimately joined the Sydney Comets of the NBL1 East for the 2025 NBL1 season.[8] She re-joined the Comets for the 2026 NBL1 East season.[17]
Pirini represented Australia at the 2013 Australian Youth Olympic Festival in 3x3 basketball.[18][19] She played for Australia at the 2015 FIBA Under-19 World Championship in Russia, where she helped the team take home the bronze medal.[2]