DeGuglielmo, 49, will work with assistant offensive line coach Chris Kuper and replace former assistant Chris Foerster, who resigned Monday after a video surfaced on social media showing him snorting an unknown white power substance off a table while at work.
DeGuglielmo returns to Miami after he spent the 2009-11 seasons as the team's offensive line coach. He brings 25 years of coaching experience -- 12 years in the NFL and 13 at the college level. DeGuglielmo has coached two Super Bowl champions, serving as the assistant offensive line coach for the New York Giants when they won Super Bowl XLII following the 2007 season and as the New England Patriots offensive line coach for their Super Bowl XLIX win following the 2014 season.
Most recently, DeGuglielmo was the assistant offensive line coach for the San Diego Chargers in 2016.
DeGuglielmo was offensive line coach with the New York Jets in 2012, and he spent five seasons (2004-08) as a member of the Giants' staff.
Prior to entering the NFL coaching ranks, DeGuglielmo spent 13 seasons at the collegiate level, including the final five at South Carolina (1999-2003) under coach Lou Holtz.
The video involving Foerster apparently was taken in one of the Dolphins' offices, and it surfaced hours after the team defeated the Tennessee Titans 16-10 on Sunday.
Multiple sources identified the man in the video as Foerster, who is seen using a $20 bill to snort the powdery substance off a table.
"Hey babe, miss you, thinking about you," Foerster begins in the video, before snorting the first of three lines. "How about me going to a meeting and doing this before I go?"
Foerster, who was in the second season of his second stint with the Dolphins, worked 24 seasons in the NFL for seven different teams. In his first stint with the Dolphins, he served as offensive coordinator in 2004.