The defender, 24, joined Boro from Doncaster Rovers this week, and made his first appearance in Tuesday night's 2-2 draw at Hartlepool United.
He made his Premier League bow in December 2009, when he was recalled from his loan at Glanford Park by parent club Wolves to go into their matchday squad for an away fixture at Manchester United.
Friend played in that match, though it was controversial as boss Mick McCarthy rested key players, and is keen to play in such arenas again.
"Middlesbrough finished just outside the play-off places last season and Tony Mowbray is building a really strong squad here," Friend told Middlesbrough's official website.
"I took that into account when deciding to move here because my ambition is to help this club achieve promotion.
"It was a big decision to make. I've been waiting every day to see what my future holds and now I'm glad it's all settled. These are exciting times at Middlesbrough."