CUA announced yesterday that Chris Whitehead, its chief executive officer, has decided to leave after five years in the top job at Australia's largest credit union. According to a media statement from CUA, Whitehead's decision was based on CUA meeting all of the goals that were set out when he was appointed.Whitehead joined CUA as CEO in August 2009 as its CEO. Since then, through a combination of  natural growth and industry consolidation, CUA became the first Australian banking mutual to have over A$10 billion in assets. Recently, the organisation completed an overhaul of its entire core banking systems and corporate processes. Other achievements listed by CUA as defining Whitehead's time with the credit union included:•    Development of new modern branches and corporate offices "to help drive flexibility and improve teamwork."•    Restructuring of subsidiaries and key product partnerships for growth and better customer outcomes.•    Building a strong digital capability and social media presence. And last month CUA, in partnership with payments technology provider Cuscal, announced the commercial rollout of "redi2PAY", the first application in Australia to use HCE (Host Card Emulation) to turn an NFC-enabled smartphone - running the latest Android operating system - into a 'tap and pay' payments device without the need for another tag or sticker.Whitehead will stay with CUA while its board undertakes a search for his successor. A CUA spokesperson said this was expected to take six to nine months.