Credit Suisse has hired a top technology executive from Goldman Sachs. The new appointment comes as part of a revamp at the Swiss firm, which is making widespread changes in its top management following two recent financial scandals. The new appointment, Joanne Hannaford, is to take over as the bank's new chief technology officer and chief operating officer. She is to succeed James Walker in the COO role. Walker, meanwhile, is to become deputy chief executive officer at Credit Suisse's US holding company. Hannaford held senior engineering roles at Goldman Sachs over a 24-year career in London and New York.