He served in Fall River city government from 2008 until 2010, including a stint as city administrator from November 2008 to April 2010, when he left to join Arlington town government.
Chapdelaine, who now lives in Dedham, starts on Sept. 9. When it was on the hunt for a new executive director, the MMA said the post could come with a salary of up to $250,000 and a lengthy suite of other employment benefits.