Before starting his professional career, Vasiliauskas played in the RKL with SRC-Dzūkija Alytus from 2014 to 2016.

[1] In 2016, he participated in the Basketball Without Borders camp in Lohja, Finland, along with his junior squads teammates Arnas Velička, Ignas Sargiūnas and Lukas Uleckas.

[2] In September, 2016, he signed a long-term deal with the Lithuanian powerhouse Žalgiris Kaunas.

[3] On 13 August 2024, Vasiliauskas signed one–year contract with Lietkabelis Panevėžys of the Lithuanian Basketball League (LKL) and the EuroCup.

[4] Vasiliauskas has actively represented Lithuania junior teams on the international stage and won medals multiple times.