ABBL (Luxembourg Bankers' Association)
In 1987, he began his professional career at Banque Générale du Luxembourg until 2007, where he held various senior positions including Director of Commercial Banking and Head of International Risk Management.
In 2007, Guy joined Banque Raiffeisen S.C. as Adviser to the Management Board. After having become a Member of the Management Board in 2007 and Member of the Board of Directors in 2008, he was appointed CEO in 2011. In 2020, he was appointed Chairman of the Board. Guy has been a Member of the ABBL Board of Directors since 2016 and was elected ABBL Chairman in April 2018.