Erin Carrillo-Bautista was named an assistant coach at Utah State in 2021 and will enter his third season with the Aggies in 2023. Carrillo-Bautista followed USU head coach Manny Martins from Eugene, where the duo served on the same coaching staff at Oregon and at Lane United in the USL League 2.

In the 2022 season, Carrillo-Bautista helped Utah State advance to the Mountain West Tournament quarterfinals, reaching the conference tournament in back-to-back seasons for the first time since 2013-14. The Aggies led the league in total points scored (87), total assists (31), total shots (300), total shots on goal (141) and were tied for first in goals scored (28). USU landed three players on Mountain West all-conference teams as juniors Kelsey Kaufusi and Alex Day, plus freshman Kaylie Chambers, were all named second-team all-MW. Chambers also earned MW all-newcomer team honors. Utah State had six players receive academic all-district honors from the association of College Sports Communicators (formerly CoSIDA). Sophomores Bizzy Arevalo, Addy Symonds and Tenzi Knowles, juniors Kelsey Kaufusi and Kylie Olsen, and senior Sara Taylor all were awarded the honor.

In 2021 and his first season as part of head coach Manny Martins’ staff, Carrillo-Bautista helped the Aggies to their most victories during the Mountain West era as Utah State opened the 2021 season with a 7-1-1 mark in non-conference play, the best record heading into conference play in school history. The non-conference slate included a 2-1 overtime victory at No. 18 BYU, the first win over a ranked opponent in USU history and the only loss for the Cougars at home in 2021. Under Martins, Utah State scored 30 goals, the most since the 2016 season as the Aggies set a school record with 34 total assists. Three members of the Utah State roster earned postseason conference honors as senior midfielder Ashley Cardozo was named first-team all-MW, junior keeper Diera Walton was named second-team all-MW and redshirt freshman defender Addy Symonds was named to the all-newcomer team.

Carrillo-Bautista was an assistant coach under Martins with Lane United heading into the 2021 season, and helped with all aspects of the team, including training, scouting and day-to-day operations. Carrillo-Bautista was active at the club level in Eugene and was an assistant coach for the Eugene Timbers club program, coaching various age groups. He cultivated more coaching experience as a volunteer assistant at Bushnell University, an NAIA program in Eugene.

Martins and Carrillo-Bautista first met at Oregon, where Carrillo-Bautista was serving as the team manager for the women’s soccer program. There, Carrillo-Bautista was able to take part in team film sessions and gained valuable insights on tactical analysis, as well as oppositional analysis. During his time there he was also able to learn the amount of preparation and attention to detail that goes into building a successful team environment.

As a player, Carrillo-Bautista was brought up through Timbers Academy in Portland, Oregon, while also playing club with the Washington Timbers. Carrillo-Bautista was recruited by several Division II and Division III programs before he stepped away from playing to focus on a degree at Oregon, graduating with a dual major in Spanish and sports business.