As a professional diplomat, Landsbergis has worked in various positions in the Ministry of Foreign Affairs of the Republic of Lithuania since 2002. In 2007, was delegated to the Embassy of the Republic of Lithuania to the Kingdom of Belgium and the Grand Duchy of Luxembourg. He was Head of the Regions and National Minorities Unit in the Government of the Republic of Lithuania from 2011-2013 and then continued his career in the Foreign Affairs and European Union Affairs Unit. He was nominated to stand for election to the European Parliament by the Homeland Union-Lithuanian Christian Democrats and gained the majority of votes. His core interests are strategical cooperation with the USA, regional development, Lithuania’s energy and cyber security, knowledge development and innovation. MEP since 2014.