On 28 June 2017, Lino agreed to a loan deal with Flamengo until October 2018, and returned to the youth setup.[4] His loan was cut short in July 2018,[5] and he was assigned to the first team of São Bernardo for the year's Copa Paulista. He scored his first senior goal on 25 August, netting his team's third in a 3–1 home win over Santos B.[6]
Lino scored his first professional goal on 2 February 2020, but in a 5–1 away loss against Moreirense. Despite scoring only twice and having only five league starts during the season, he still renewed his contract until 2024 on 29 July 2020,[9] and subsequently started to feature more regularly in his second year, netting eleven goals overall.