[2] As a youth player, Fernández was with Universidad Católica before joining Audax Italiano aged 15,[3] making his professional debut in 2017.

[5] In 2016, Fernández represented Chile at under-17 level in the friendly tournament Copa UC [es].

[3] At under-20 level, Fernández represented Chile in the 2018 South American Games, winning the gold medal.

[6] At senior level, he received his first call up under Ricardo Gareca for the friendly matches against Albania and France in March 2024.

This biographical article related to a Chilean association football defender is a stub.