On 28 December 2018, Venskus made his EuroLeague debut when he played 2.5 minutes in an away loss in Gran Canaria.
[5] On 8 August 2022, Venskus signed a one-year contract with ZZ Leiden of the BNXT League.
[2] On 12 March 2023, he won the Dutch Basketball Cup with Leiden after defeating Landstede Hammers in the final.
[7] On 6 August 2024, Venskus signed with CBet Jonava of the Lithuanian Basketball League (LKL).
[8] Venskus played for the Lithuania under-19 team at the 2019 FIBA U18 European Championship where he averaged 12.9 points and 7.3 rebounds.