While September to February, ideally, is the domain of the coaching staff, it is from January through into the Summer where the general manager and the front office really rule the show in the NFL world. That is the primary period during which they work to assemble the rosters that the coaches use to compete during the Fall and Winter.
For the Pittsburgh Steelers, the man driving that engine for the past couple of decades has been general manager Kevin Colbert, and this will be his last season in that seat, as he has already announced that he would be stepping down following the 2022 NFL Draft, though he has left open the possibility of remaining under another title.