Shewmaker enters his second season with the Chanticleers after having spent the last three seasons as an assistant coach with the Vanderbilt baseball program.
In his third season with the Commodores, Shewmaker helped lead Vanderbilt to its 18th consecutive NCAA Tournament berth, appearing in the NCAA Clemson Regional. Vanderbilt finished the 2024 season with a 38-23 overall record.
 In 2023, Shewmaker helped lead the Dores to their fourth SEC Tournament Championship as Vanderbilt finished the season with a 42-20 record.
Prior to joining the Vanderbilt staff, Shewmaker spent two seasons as an assistant coach and recruiting coordinator for Campbell after serving as the volunteer assistant coach for one year and the director of baseball operations in his initial season. During his time in Buies Creek, he helped lead the Fighting Camels to three consecutive conference championships in the Big South and three consecutive NCAA Regional appearances.
In addition to supervising the recruiting efforts for the Fighting Camels, Shewmaker oversaw the development of the Campbell catchers while working primarily with the hitters and assisting with offensive game planning.