Messias started his senior career in the lower-tier, non-professional Italian divisions,[3] being discovered by former Torino player and manager Ezio Rossi, who persuaded him to join Casale in 2015.

[8] He was instrumental in Crotone's promotion to the Italian top flight (the second in the club history) by scoring six goals throughout the season, and was confirmed as part of the team squad for the 2020–21 Serie A campaign.

[17] On 11 August 2023, Messias joined recently promoted Serie A club Genoa on a season-long loan with the option to make the deal permanent, which becomes an obligation if certain conditions are met.

[18] On 13 January 2024, Genoa CFC paid the clause to AC Milan, totalling 3 million euros and with Messias permanently moving to the club.

[19] A Brazilian by birth, Messias moved to Italy in 2011 together with his wife and son, joining his brother in Turin, where he started working in the delivery sector and playing football for an amateur team of the local Peruvian community in his free time.