Jim Schwartz will coach two games at Ford Field next season, but he’ll be on the visiting sidelines for preseason and regular season contests.

Schwartz, who was fired by the Lions on Dec. 30, has been hired by the Buffalo Bills as their defensive coordinator.

“We are excited to add a talented and accomplished coordinator in Jim Schwartz to our staff,” Bills coach Doug Marrone said in a statement. “Schwartz has led aggressive and productive defensive units throughout his time in the NFL and we feel our defense will continue to improve under his leadership.”

Schwartz replaces Mike Pettine who has been hired as head coach of the Cleveland Browns.

Prior to being hired in Detroit five seasons ago, Schwartz was the defensive coordinator for the Tennessee Titans for eight seasons (2001-2008).

Schwartz, 47, was 29-51 in five seasons (2009-2013) as head coach of the Lions. He led the team to a 6-3 start last season, but they collapsed losing six of the final seven games. The Lions will benefit from Schwartz’s hiring. His contract had offsets which will help the Lions with the $12 million he was owed, according to Ian Rapoport of the NFL Network.

The Lions have hired Jim Caldwell, former Ravens’ offensive coordinator, as head coach. Teryl Austin will be the defensive coordinator with Joe Lombardi as offensive coordinator. Eight of Schwartz’s assistants have been kept on Caldwell’s staff.

Todd Downing, who was fired as Lions’ quarterbacks coach, will serve in that same position with the Bills.

(Follow @PaulaPasche on Twitter. Order her book,  “100 Things Lions Fans Should Know & Do Before They Die’’ here. It’s also available at bookstores.)