He transferred to Boston College after receiving limited playing time for his junior year in the 2021–22 season.

[10][11] While being on a call with his parents, he cried tears of joy, but when they asked him where he was headed, he admitted he did not know either, Post told ESPN Netherlands about the chaotic draft night.

[13] In a 30 December game against the Cleveland Cavaliers, Post scored his first career NBA points on a putback following a Pat Spencer miss.

[14] On 23 January 2025, Post scored a career-high 20 points for the Warriors in a 131-106 home game win over the Chicago Bulls.

[16] The day after signing a new contract, Post started in a 132-111 win over the Chicago Bulls and scored 18 points on 70% field goal shooting.