Vilius came through the underage ranks at Cabinteely along the Green Line.
He played with their U17 side in 2017 and 2018. He progressed to the club’s U19 side in 2018 and in 2019.
The former Lithuanian youth international became part of the senior squad in 2019.
He made his senior league debut at home against Bray Wanderers on February 22, 2019.