Polish and Slavic Federal Credit Union in New York has hired Oskar Mielczarek, an experienced banker, as its president and chief executive.

Mielczarek has been an executive with JPMorgan Chase & Co., Merrill Lynch & Co. and Barclays PLC, the credit union said. He speaks fluent Polish, English, Spanish and French, it said.

The institution is the nation's biggest ethnic credit union, with assets of $1.4 billion.

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