[4] After Alain Baroja left Caracas FC, Faríñez became the first-choice goalkeeper of the club for the 2015 Torneo Adecuación despite being only 17 years old at the time.

[8] Faríñez made his debut for Millonarios during the first leg of the 2018 Superliga Colombiana, playing for the full ninety minutes in the 0–0 tie against Atlético Nacional.

He started the 2013 South American Under-15 Football Championship as the first-choice goalkeeper in the opening match against Colombia and conceded four goals on a 2–4 defeat for Venezuela.

He returned to the starting line-up for the game against Uruguay in which he conceded four goals again on the third defeat in a row for the Venezuelan team.

Faríñez was the first-choice goalkeeper of the under-17 side for the 2015 South American Under-17 Football Championship, having a great performance against Brazil saving the team in a lot of occasions and securing a 3–2 come-back victory.

[18] Faríñez started in the opening match of the 2017 South American Youth Football Championship for the under-20 side playing against Uruguay, saving a penalty and keeping a clean sheet in a 0–0 draw.

[19] Faríñez started all nine games for Venezuela conceding only six goals, being the less scored goalkeeper of the tournament as they qualified to the 2017 FIFA U-20 World Cup.

In the semi-finals against Uruguay, Faríñez made four crucial saves during the game and stopped two shots in the penalty shootout to send Venezuela to their first FIFA tournament final ever.

Despite his young age, Faríñez was called up by the Venezuela national football team's coach Noel Sanvicente to play in the 2015 Copa América, being recognized for his great talent by the press and signaled as the future goalkeeper of the national team and becoming the youngest player of that tournament.

After the match, coach and former national team goalie Rafael Dudamel, said ¨Venezuela has a goalkeeper for the next 20 years¨,[25] with the press acknowledging that Faríñez ¨shined¨.

Faríñez put in an extremely solid performance as Venezuela beat Argentina 3–1, on Lionel Messi's first match back from his second international retirement.

Venezuela finished as second of the group behind Brazil and faced Argentina at the quarter-final, they lost the game 0–2 being knocked out of the tournament.