Mevlin, 50, spent the last season at Temple last season. He coached at Rutgers from 2002-2004.
In getting Melvin, coach Greg Schiano gets a veteran coach with NFL experience. He left the Scarlet Knights to join Romeo Crennel's staff with the Cleveland Browns.
Melvin spent four seasons with the Cleveland Browns, and also coached for two seasons with the New England Patriots.
Melvin's college experience includes stints at East Illinois, which is his alma mater, Wyoming, Purdue and Illinois.
Meanwhile, Galiano comes back to Rutgers after spending the last three seasons as the defensive coordinator and linebackers coach at Florida International. It means he brings back strong South Florida connections.
Galiano spent four seasons with the Scarlet Knights, and he worked with the defensive line and linebackers. He also coached at Dickinson College, the University of New Haven and Villanova.
It remains to be seen how Galiano's on-staff assignment shakes out since he, in essence, is taking the slot previously occupied by Susan, who served as tight ends coach and recruiting coordinator.