Isabella joined NASDAQ International as Managing Director in 2001, responsible for business development and account management of The NASDAQ Stock Market in Western Europe. Following NASDAQ's acquisition of OMX, Isabella was promoted to Senior Managing Director, responsible for the listings business of NASDAQ OMX in Europe.

Prior to that, Isabella gained extensive business development experience within the telecommunications industry, heading business units at British Telecommunications Plc and at Deutsche Telekom AG, and within the Services Industry.

Isabella graduated from Munich University with an Honours Degree with distinction in Business Management.