[6] In August 2024, Hansen was nominated by Prime Minister Luc Frieden to be Luxembourg's EU Commissioner[7] After finishing his secondary education at the Lycée du Nord in Wiltz (1995–2002), he went on to study at Louis Pasteur University in Strasbourg, where he completed a master's degree in Geosciences, Environmental Sciences and Risk Management.

In 2018, he was elected chair of the Christian Social People's Party (CSV) northern district committee, serving in that position until 2021.

Following her decision to run in the 2018 Luxembourgish general election, Viviane Reding gave up her seat as Member of the European Parliament to Hansen in September 2018.

[16] Within the European Parliament, he works primarily on three committees: As part of his committee assignemnts, Hansen served as rapporteur on the European Parliament recommendation of 18 June 2020 on the negotiations for a new partnership with the United Kingdom after Brexit.

[22] Under the Finnish Presidency, in his capacity as rapporteur, he negotiated an agreement with the council on the directive on the quality of water intended for human consumption, which was finally concluded in 2020.