Smith-Williams signed a one-year deal with the Falcons on Monday, Greg Auman of Fox Sports reports.
Smith-Williams spent the first four seasons of his career with Washington, where he recorded seven sacks across 55 appearances. In 13 games last season, the 26-year-old logged 22 tackles and one sack. Smith-Williams should add depth at defensive end for the Falcons, and he'll likely slot in somewhere beind starters Ta'Quon Graham, Grady Jarrett (knee), and Zach Harrison (knee).