Born in São Paulo, Luan Peres began his career on Portuguesa, being promoted to the main squad in July 2013, as a backup to Rogério.

[2] He alternated between the first-team and the under-20s in the following years, being named on the bench for the club's last matches of 2014 Série B, but remaining an unused substitute as his side suffered relegation.

[3] After being included in the 28-man list for the 2015 Campeonato Paulista,[4] Luan Peres made his professional debut on 8 April, starting in a 3–0 away loss against São Paulo.

[6] Luan Peres scored his first senior goal on 16 February 2016, in a 2–1 Campeonato Paulista Série A2 home defeat of Velo Clube.

Ahead of the 2017 Campeonato Paulista, he signed for Red Bull Brasil, being a regular starter as his club narrowly avoided relegation.

Luan Peres made his UEFA Champions League debut on 11 December 2018, replacing Cyril Ngonge in a 0–0 home draw against Atlético Madrid.

On 29 December 2020, his loan was extended until the end of the 2020 Copa Libertadores;[17] the extension also added an obligatory buyout clause if his team reach the Final of the competition.