I was in a match and wanted to add some players on my team to see if they wanted to queue up. To my surprise, there was no way of viewing their Steam profiles from the scoreboard or from the recent players tab. No players from Dirty Bomb matches showed up on the recent players tab either. I am not sure if this is a bug/glitch or just not added. I would like to see the ability to view a players Steam profile from the scoreboard and Steam profiles showing up in the recent players tab. 
Viewing Steam profiles from scoreboard or recent players tab
reliableSeagull
(reliableSeagull)
#1
Aazhyd1
(Aazhyd)
#2
It’s just not added. There is no direct link to Steam, other than starting the game.
However, user names are indentical. So the workaround is to remember their names and look them up in Steam, then add them as friends. You’ll see in game when they’re logged on to DB.