 He was first included in a senior matchday squad on 1 November 2015, remaining an unused substitute in their 2–0 home win over Clube de Regatas do Flamengo in the Campeonato Brasileiro Série A; he made two further appearances on the bench that month.On 10 February 2016, he made his senior debut in a 1–0 win at Veranópolis in the year's Campeonato Gaúcho, replacing Giuliano after 61 minutes.On 12 January 2017, Tontini moved to Série B team Ceará on a season-long loan.