Born in
Rondonópolis,
Mato Grosso, Ivonei joined
Santos' youth setup in 2013, from
Vila Aurora. On 2 October 2018, he signed his first professional contract with the club, until 2021. In June 2020, after the
COVID-19 pandemic, Ivonei was promoted to the main squad by manager
Jesualdo Ferreira. He made his professional – and
Série A – debut on 13 August, coming on as a second-half
substitute for fellow youth graduate
Alison in a 2–0 away loss against
Internacional. Ivonei made his
Copa Libertadores debut on 1 October 2020, replacing
Jobson in a 3–2 away win against
Club Olimpia. On 23 October, he renewed his contract with the club until July 2025. Ivonei scored his first professional goal on 14 November 2020, netting the opener in a 2–0 home win against
Internacional; it was also his first career start. He subsequently featured rarely during the 2021 season before being demoted back to the under-20 squad in March 2022. in 2023 Back to the main squad for the 2023 season, Ivonei featured rarely before being separated from the first team squad by new head coach
Paulo Turra on 4 July 2023. Eight days later, he was loaned to
Série B side
Botafogo-SP for the remainder of the year. After returning from loan, Ivonei was not included in the first team squad of
Peixe, and rescinded his contract with the club on 13 June 2024. ==International career==