Nevertheless, in 2014, he had a brief spell at the Colo-Colo Football Academy in the Estadio Monumental David Arellano, which he abandoned due to the exhaustion generated by the constant trips between Santiago –where the training facility was located– and Curauma, where, at that time, he lived.

On 11 February 2024, it was announced that Cepeda signed with Colo-Colo.[3] On March 31, he scored his first goal for the team in a 4–1 home win over Everton de Viña del Mar,[4] Wanderers' historic rival.

[7][8] Months later, on August 20, he netted a key goal against Junior de Barranquilla in a 1–2 visit victory at Colombia for the 2024 Copa Libertadores Round of 16.

[9] In 2024, Cepeda received a call from the coach, Nicolás Córdova, to play in the CONMEBOL Pre-Olympic Tournament held in Venezuela.

At senior level, Cepeda received his first call-up for the 2026 FIFA World Cup qualification matches against Brazil and Colombia in October 2024.