He graduated from law at Charles University in Prague, and then went on to study Human Rights and Democratization in Sarajevo and Bologna. He was later awarded a fellowship at the European University Institute in Florence where he dealt with climate mitigation and adaptation in a transnational context.

In the past, Tomáš worked as a Policy Officer in the Czech Migration Consortium, as a political analyst, manager of election campaigns or as a high-school teacher. He is a member of the Czech Pirate Party. At present, he collaborates with the Environment Ministry on agendas related to the 2022 Czech Presidency to the EU Council.