Griffin began his coaching career in the collegiate ranks, first starting at
Pepperdine University as a graduate manager for the men's basketball team from 2018 to 2020 and then serving as video coordinator for both men's and women's basketball programs from 2020 to 2021. In 2021, Griffin earned his first position coaching in the NBA. Griffin spent three seasons from 2021 to 2024 with the
Denver Nuggets, spending the 2021–22 season as an assistant video coordinator and two seasons from 2022 to 2024 as head video coordinator/player development. He was a member of the Nuggets when the team won the
2023 NBA Finals and the Nuggets' first NBA championship. On May 31, 2024, the
Brooklyn Nets announced that Griffin would be named as an assistant coach under head coach
Jordi Fernández. ==Personal life==