Mitsubishi UFJ Financial Group Inc. named Hironori Kamezawa as Chief Executive Officer, turning to a math expert to help Japan’s biggest bank forge a path in the digital era, Bloomberg reported.

Kamezawa, 58, will take the top post on April 1, the Tokyo-based bank said in a statement on Friday, confirming news reports from earlier this week. He succeeds Kanetsugu Mike, 63, who is stepping down after just a year at the helm but will remain chief of the main lending subsidiary.

Currently deputy president and a leader of the lender’s technology overhaul, Kamezawa faces the challenge of reshaping a domestic business that’s being squeezed by low interest rates and costly branches.

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