2008-09: Mattias Backman debuted in Sweden’s SuperElit junior league with the Linkoping J20 club, appearing in a pair of games without registering a point.
2009-10: Backman spent the bulk of the season with Linkoping J20, posting 4 goals and 5 assists in 33 games in the regular season before adding one goal in 6 games in the playoffs. He also played in 5 contests with the big club in the Elitserien without picking up a point.
2010-11: Backman gained some pro hockey experience – appearing in six Elitserien games with Linkopings and two games on loan to First Division team Mjolby. He represented Sweden at the 2010 U19 World Junior A Challenge and had an impressive campaign with Linkoping’s U20 team. Backman was minus-2 with four penalty minutes in limited ice time with Linkopings men’s team and scored 1 goal and 2 assists for Mjolby. He had 1 assist and 4 penalty minutes for fifth-place Sweden at the WJAC. He scored up 2 goals with 18 assists in 27 games with Linkopings U20 team and added 2 assists in three playoff games. Ranked 95th amongst European skaters in Centrral Scouting’s final rankings, Backman was selected by Detroit in the fifth round (146th overall) of the 2011 NHL Draft.
2011-12: Backman skated in 42 games for Linkopings as a 19-year-old in his first pro season in Sweden’s Elitserien and played for gold-medal winning Sweden at the 2012 U20 World Junior Championship. He scored 1 goal with 7 assists and was plus-seven with 14 minutes in a lower pairing role for Linkopings – averaging 11:27 minutes of ice time per game. In six games at the WJC he was plus-five with 3 assists and 4 penalty minutes. Sweden defeated Russia, 1-0 in the gold medal game. Backman skated with Linkopings U20 team in six regular season games and was plus-two with 1 goal and 1 assist. He was with the U20 team during the run to the SuperElit finals after Linkopings’ tenth-place men’s team did not make the playoffs and was the team’s second-leading scorer with 2 goals and 6 assists; finishing plus-five in six games.
2012-13: Backman appeared in a career-high 52 games in his second season with Linkopings. He scored 2 goals with 24 assists and was +5 with 34 penalty minutes. Linkopings finished fifth in the Elitserien and lost to league champion Skelleftea in the playoff semifinals. Backman scored 2 goals with 4 assists and was +6 with 4 penalty minutes in 10 playoff games. He played five games for Sweden in the Europe Trophy tournament with no points nor penalty minutes. Backman signed a three-year entry-level contract with Detroit in May, 2013.
2013-14: Backman played his first pro hockey in North America, joining the AHL’s Grand Rapids Griffins following his SHL season with Linkoping. He had no points and was -1 with no penalties in two regular season games with the Griffins. Grand Rapids reached the second round in the playoffs. Backman scored 1 goal with 5 assists and was -6 with 6 penalty minutes in 10 AHL playoff games. During the SHL regular season with ninth-place Linkoping he scored 6 goals with 15 assists and 16 penalty minutes and had a team-best +25 plus/minus. Backman had 7 assists and was +4 with 6 penalty minutes in 13 playoff games.
2014-15: Backman began the season with the AHL’s Grand Rapids Griffins before returning to Sweden to play for Linkoping in December 2015. Acquired by Dallas from Detroit in March along with Mattias Janmark as part of the trade for veteran Erik Cole, he joined the AHL’s Texas Stars following the SHL playoffs. He skated in one playoff game and two playoff contests with the Stars and was -1 with 1 assist in three games. Backman played 18 games for Grand Rapids and was -3 with 4 assists and 6 penalty minutes before going back to Linkoping. In 25 SHL regular season games he scored 4 goals with 13 assists and had an even plus/minus with 4 penalty minutes, averaging 19:41 minutes of ice time. Linkoping finished fourth and advanced to the second round. Backman had 3 assists and was -7 with 6 penalty minutes, averaging 14:21 minutes of ice time in nine playoff games.
Despite his size, Backman doesn’t play a particularly physical or powerful game. He is a simple, economical defenseman who makes the smart play and knows to play within himself. He’s an excellent skater for his size, makes a good first pass and makes good decisions with and without the puck. He won’t wow you, but he won’t often be beat or get caught cheating either.
Backman is skating for Dallas AHL affiliate Texas in 2015-16. In his second attempt at playing in the AHL he has looked much more comfortable. He is seeing a regular role with the Stars and is among the team's leaders in plus/minus while chipping in offensively. The Stars have a deep group of young defensemen which makes it tough for Backman to crack the NHL lineup. His progress this season suggests he can be an effective lower pairing NHL defender with the mobility to support the play.