[1] Growing up in Newcastle, he blossomed into a basketball star, and went on to average 9.1 points and 4.3 rebounds while helping lead Australia to a silver medal at the 2014 FIBA Under-17 World Championship in Dubai.

[2] Noi attended San Clemente High School[3] and St Francis Xavier's College in Newcastle.

[6] Noi enrolled at Texas Christian University (TCU) on a basketball scholarship in the summer of 2016, and redshirted in his first season on campus as the Horned Frogs won the 2017 NIT title[7] under first-year head coach Jamie Dixon.

He averaged 10.2 points per game as the Frogs finished the season with a 21-12 record and secured a berth in the 2018 NCAA tournament, the program's first in 20 years.

[15] Following the 2021–22 NBL season, Noi joined the USC Rip City in the NBL1 North, where he earned league MVP and All-Star Five honours.

[28] Noi was named to the training camp squad of the South Sudan basketball team for the 2024 Summer Olympics.

[31][32] Noi is a cousin of fellow basketball players, Yuat Alok and Lat Mayen.