Having earned attention for his college basketball career at Warner Pacific College, Collin Malcolm began his professional career in the 2019-20 season with BC Batumi in Georgia, where he also played in the Georgian All-Star Game that same season. Continuing his career in the following seasons with Karhu Kauhajoki in Finland, Keravnos Strovolou in Cyprus, Telekom Baskets Bonn in Germany, and Paris Basketball in France, Malcolm most recently played for Hapoel Tel Aviv in Israel. Malcolm won the national championship with Keravnos Strovolou in the 2021-22 season in Cyprus, followed by the Cyprus Cup and Cyprus Super Cup titles in 2022, where he was also named Cyprus Cup MVP that same season. The experienced player won the 2023 FIBA Basketball Champions League with Telekom Baskets Bonn in Germany, and with Paris Basketball in France, he added the 2024 BKT EuroCup, the 2024 French Leaders Cup, and the 2024-25 French League championship to his trophy case. Playing for Hapoel Tel Aviv last season, Malcolm averaged 6.9 points, 3.6 rebounds, and 1 assist in the EuroLeague, and his career also includes numerous domestic league and cup championships.