Before joining Brunswick, Oliver was Head of Communications and spokesperson of the Austrian National Central Bank (OeNB) and its Governor for 13 years. He represented the Central Bank in European Committees such as the Eurosystem/ESCB and led the syntegration of the Financial Market Authority and the Banking Supervision of the Central Bank in Austria. Oliver also served as an advisor to the State Secretary in the Austrian Federal Chancellery on economic and financial strategy and public service reform.