He is on the books of Macara and wears shirt number 20. His main role on the pitch is Forward. His stronger foot is Right. His estimated market valuation currently stands at 1000K €.

His latest transfer saw him join Macara from CD Macara U20 via on 2023-01-01.

During the LigaPro Serie A 2025 campaign, Mateo Viera made 16 appearances, scoring 0 goals and adding 1 assists. He averaged 0 goals per match from 0 shots, with 0 on target.