Born in Odorheiu Secuiesc into an ethnic Hungarian family, Ilyés started to play handball for his hometown club.

He was spotted by the scouts of SC Pick Szeged, and the talented left back signed a contract with the Tisza-side team in 2000.

His playing minutes were limited in the early times, so he moved to Makói KC on loan to get more experience.

[1] On 14 January 2011 it was announced that Ilyés signed a three-year contract with his former club, Veszprém, and will re-join the record champions in the summer.

His sister is the former international handball player Annamária Ilyés;[8] their mother Magdalena Mikloș represented Romania in the same sport.