Michael Chamberlain has been named vice president, senior business banking relationship manager, for Key Bank.

Chamberlain is responsible for business lending throughout Key’s Bangor metro market, and is based at 23 Water St. in the city.

Previously, Chamberlain, of Belfast, served as a business banking relationship manager in Key’s Bangor market and Key’s coastal/central market. Prior to joining Key, Chamberlain was assistant vice president, Commercial Banking, for  Northeast Bank in Augusta.