WEX Inc. (WEX) today announced that Daniel (Don) Callahan, the former global head of operations and technology at Citigroup, has been elected to the company’s board of directors. An acknowledged leader in both the financial services and technology industries, Mr. Callahan retired from the global bank in December 2018. Previously, he held senior management positions at Morgan Stanley, Credit Suisse and IBM.
At Citigroup, Mr. Callahan managed a complex set of businesses and services spanning more than 100 countries, a multi-billion dollar operating budget and critical systems infrastructure including the bank’s cybersecurity initiatives. He most recently led a top-to-bottom transformation of operations and technology, helping move the global bank from a collection of independent and dispersed entities into a lean, fully integrated enterprise. Mr. Callahan also established globally consistent technology standards and governance, and migrated critical functions to an integrated, managed, shared services model.
Earlier in his career, Mr. Callahan spent 12 years at IBM, where he held a number of management positions, including director of strategy for IBM Japan.
Mr. Callahan currently serves on the boards of Tata Consultancy Services LTD and several private companies. He also serves on the board of the American Red Cross Greater New York Region, business committee of the Metropolitan Museum of Art, and is a fellow at the Foreign Policy Association. Mr. Callahan holds a bachelor’s in history from Manhattanville College where he serves as Chairman Emeritus.
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