From 2014 to 2018, Lashbrook worked as a basketball operations intern and video coordinator with the Philadelphia 76ers.[1]
From 2018 to 2023, Lashbrook worked as a video coordinator and player development coach with the 76ers under head coaches Brett Brown and Doc Rivers.[2]
Prior to the 2023–24 season, Lashbrook joined the Celtics organization as a player development coach, focusing on leading the Celtics' late game situational prep and developing younger players.[3]
In September 2024, Lashbrook was named as the head coach of the Celtics' NBA G League affiliate, the Maine Celtics.[4]