Early career Sullivan joined the New York Red Bulls Academy in 2017. He also played
college soccer with
Clemson. In 2021 he helped Clemson win the NCAA Division I men's soccer championship. During his college years Sullivan also played for the Hudson Valley Hammers.
New York Red Bulls On March 21, 2023, Sullivan signed his first professional contract with
New York Red Bulls II. On 20 March 2024, Sullivan scored his first goal of the season for New York in a 5–1 victory over his hometown club, Hudson Valley Hammers, in the first round of the
U.S. Open Cup. ==Career statistics==