Financial services giant Citi is looking for a new CIO after Robin Young announced his resignation after 18 months in the role.
Young's role has involved the integration of UK internet bank Egg, which Citi acquired in January last year.
Young's deputy will now take charge of the technology division at the firm.
Citi said this is only a temporary measure. "Following Robin's departure, the technology division will be supervised by his deputy Roy Aston in the interim period whilst we look for a new head of the department."
Chris Skinner, CEO at financial services think-tank Balatro, said because Citi is one of the largest banks in the world it would make an attractive challenge for IT executives at mid-sized banks. "But the average tenure of a CIO at a large bank is 18 months so will they be willing put their necks on the line?"
He said the firm could look outside the financial service sector for a replacement. "It could go for someone in the telco sector to take advantage of the current increase in mobile technology in banking."