Rookie safety Shamarko Thomas, the first of two fourth-rounders for the Steelers in the 2013 draft, signed a four-year deal Thursday.
Financial terms of the contract were not disclosed.
Thomas was the 111th overall pick and started 39 of 48 games in which he played at Syracuse, recording 263 tackles, 16.5 TFLs and four sacks.
Thomas was named All-Big East first team last season with a career-high 88 tackles. He was a second-team All-Big East selection in 2011 and earned All-Big East freshman team honors in 2009.
The Steelers expect Thomas to contribute to their special teams as a rookie and learn the ropes behind Troy Polamalu and Ryan Clark.