Boston City Retirement System is searching for an executive director...

Boston City Retirement System is searching for an executive director to replace Donna Mueller, who left Jan. 31 to become the CEO of the $14.8 billion Iowa Public Employees’ Retirement System, Des Moines. The search is being conducted in-house, said a spokeswoman for the $2.9 billion Boston fund. No timetable has been set for the hiring, the spokeswoman said.