Frank Eliason, who gained a reputation as a "Twitter guru" in his previous role at US cable, phone and Internet provider Comcast, has been hired by Citi to lead its social media efforts.
Eliason is widely credited with pioneering the use of Twitter to offer fast, personalised customer care through @comcastcares.
As senior director in national customer operations, he helped improve the cable giants reputation, gaining notoriety and numerous flattering profiles in the mainstream press.
However, late last week Eliason revealed in a blog that he is leaving the firm because an "opportunity to return to banking in a social media role has presented itself".
The banking opportunity is with Citi, he has confirmed on Twitter, replacing Jamie Punishill, who recently left to take up the position of global head, wealth management, online, at Thomson Reuters.
The bank has followed in Eliason's footsteps by using Twitter to offer customer support and has also taken part in a Finextra Twitterview.