Finland's OP Financial Group appointed Jarmo Viitanen the new managing director of Helsingin Seudun Osuuspankki, or OP Helsinki, the group's biggest retail bank.

Viitanen, whose appointment takes effect Nov. 8, has been with the group since 1985 and previously served as managing director of OP Länsi-Uudenmaa.

OP Helsinki employs about 490 financial sector professionals covering more than 400,000 clients, the group said Aug. 8.