On 28 September 2018, it was reported that Athletico Paranaense reached an agreement to sign Erick.[6] He was announced by his new club on 9 January 2019, being initially assigned to an under-23 squad for the 2019 Campeonato Paranaense,[7] and made his club debut ten days later, in a 1–0 home loss to Cascavel CR.[8]
Erick scored his first goal for Furacão on 27 January 2019, netting the opener in a 2–0 away win over Rio Branco-PR; it was also his first start for the club.[9] He later started to feature with the main squad, and made his Série A debut on 5 May, starting in a 1–1 away draw against Chapecoense.[10]
Erick scored his first goal in the top tier on 10 October 2019, netting Athletico's second in a 2–2 away draw against Corinthians. The following 14 January, after establishing himself as a first team member, he renewed his contract with the club until 2025.[11]
Erick had his best individual inputs for Athletico during the 2023 season, where he scored eight goals and provided eight assists.[12] On 11 April 2024, he further extended his link until 2026,[13] and played his 250th match for the club in June.[14]