Mateus established himself as a key midfielder in 2019 before injury ruled him out of the final four matcxhes. He totaled 445 minutes.
Mateus played for Boston City FC II in the Bay State Soccer League in 2018. He scored the equalizing goal in the first BCFC II match of 2019 as the Lions won 2-1 in the McKenzie Cup.
In his native Brazil, he played at Botafogo – SP and Monte Azul – SP.