Philbin was the Indianapolis Colts assistant head coach and offensive line coach the past two seasons, but he spent nine seasons with the Packers from 2003 through 2011, filling a variety of roles. He was Green Bay's offensive coordinator from 2007 through 2011 before becoming the head coach of the Miami Dolphins.
Philbin was fired by the Dolphins four games into the 2015 season following a 1-3 start.
It was with the Packers that Philbin had the most success. He called the plays and was the offensive coordinator for the team when it won Super Bowl XLV.
Now he is reunited with Green Bay head coach Mike McCarthy, hoping they can reinvigorate a Packers offense that struggled in 2017.
The Packers ranked among the league's top 10 in both points and offensive yardage all five years Philbin was their offensive coordinator, and they led the NFL in yardage and were third in points in his final season in Green Bay.
In 2017, the Packers ranked 26th in offensive yardage and 21st in scoring, although the absence of quarterback Aaron Rodgers for much of the season undoubtedly had an impact on Green Bay's offensive production.
Pettine takes over on other side of the ball after the team fired Dom Capers on Jan. 1. The Packers finished 22nd in the NFL in total defense.
Pettine was the Cleveland Browns' head coach for two years before he was fired after compiling a 10-22 record. He previously worked under Rex Ryan with stops that included the Baltimore Ravens in several defensive roles, and New York Jets and Buffalo Bills as defensive coordinator.
During the 2017 season, Pettine worked as a consultant for the Seattle Seahawks.
The Packers were not done making changes on Wednesday after finishing the season with a 7-9 mark and out of the playoffs for the first time since 2008. They also promoted Jerry Montgomery to defensive line coach and David Raih to wide receivers coach after the pair was on staff previously as positional assistants.
The team then announced its entire staff under McCarthy, including James Campen (offense -- run game coordinator/offensive line), Jim Hostler (offense -- pass game coordinator), Patrick Graham (defense -- run game coordinator/inside linebackers), Joe Whitt Jr. (defense -- pass game coordinator), Frank Cignetti Jr. (quarterbacks coach), Ryan Downard (defensive quality control coach), Maurice Drayton (assistant special teams coach), Scott McCurley (defensive assistant) and Jason Simmons (secondary coach).