He is on the books of Atromitos Athens and wears shirt number 12. His main role on the pitch is Midfield. His stronger foot is Right. His estimated market valuation currently stands at 600K €.

His latest transfer saw him join Atromitos Athens from Diagoras Rodou via Loan on 2024-06-30.

Over 23 appearances in the Super League Greek 2025-2026, Mattheos Mountes contributed 0 goals and 0 assists, completed 9 key passes from 638 total passes, and posted a passing accuracy of 22.4.