His playing career was mostly spent in the National Soccer League, and concluded in the successor league the Canadian Professional Soccer League. After retiring from the game he made the transition to the managerial side, where he initially began managing in the NSL, and later in the CPSL.
In 2002, he went abroad in order to gain additional experience with his involvement with several Italian clubs. He later returned to the Canadian Soccer League, and was recognized with the CSL Coach of the Year award in 2008. In 2010, he was part-owner of Milltown FC, and also served as head coach in the club's inaugural run in the CSL.[1] He would later serve as an assistant coach to the Canada national team, U-23, U-20, and U-18 teams.[2] In 2016, he managed in the Uruguayan Segunda División for Canadian S.C..
He was instrumental in the creation of League1 Ontario where he served as Technical Director in 2014.[3][4]
In 2003, he went to Italy to first coach the Faenza Calcio U-15 team. Then he was promoted to assistant coach, and eventually head coach in 2005.[10]
Canada
In 2007, he returned to coach North York Astros in the renamed Canadian Soccer League and completely transformed the team from a struggling team to a playoff contender.[11] In his first year, he secured a postseason, and in his second season led the team to a second-place finish in the National Division.
The league awarded Carbajal as the Coach of the Year in 2008.[12] In 2009, he was appointed head coach for league giants Serbian White Eagles.[13][14] He secured the International Division title for the club, but was released by the club before the playoffs.[15] In 2010, Milltown FC announced the signing of Carbajal as head coach.[16] In his first season with Milltown the club finished fourth in the overall standings with the second best defensive record.
In June 2021, he was named the head coach for Tacuary in Paraguay's Tercera División.[22] The following season, Carbajal managed in Paraguay's second-tier league with Club Atlético 3 de Febrero.[23] In 2023, he secured a deal with league rivals Atyrá where he only managed the club in one match.[24][25] Shortly after he returned to his former club 3 de Febrero initially as a technical director.[26] Immediately after he was named the manager for the club.[27]