Complex sentence: Spagnuolo was hired by the Giants after two seasons as a defensive assistant with the Baltimore Ravens, and was first hired by the Giants in 2007 after spending eight years on the defensive staff of Jim Johnson of the Philadelphia Eagles.
Split into simpler sentences: Spagnuolo was hired by the Giants after two seasons as a defensive assistant with the Baltimore Ravens. This was his second stint with the Giants, having coached with them from 2007-2008 after spending eight years on the defensive staff of Jim Johnson of the Philadelphia Eagles.