2010-11: Jonas Johansson played for the Brynas club in his hometown — appearing in one U18 game and six U16 elite league games — and played for Gastrikland in the TV-Pucken tournament for Sweden’s high school players. Johansson had a 1.63 goals against and .917 save percentage in U18 play. He had a 4.46 goals against and .870 save percentage with the Brynas U16 team. In five games during the TV-Pucken tournament he had a 4.70 goals against and .862 save percentage.
2011-12: Johansson played five games in Sweden’s SuperElit U20 league as a 16-year-old and played for Brynas’ U18 team; representing Sweden in the 2012 U17 World Hockey Challenge in Canada. He had a 3.29 goals against and .890 save percentage in SuperElit play. Johansson played 21 regular season games for Brynas’ U20 team, posting a 2.05 goals against and .911 save percentage. Brynas finished fourth in the regular season and reached the playoff semifinals; losing 4-2 to Frolunda in the bronze medal game. Splitting time with Oscar Dansk (Columbus), Johansson was 1-2 with a 2.36 goals against and .921 save percentage in three playoff games. He had a 4.63 goals against and .862 save percentage in three games at the WHC.
2012-13: Johansson appeared in his first game with Brynas’ Elitserien squad in the European Trophy tournament and played for Sweden’s U18 team in the Ivan Hlinka Memorial Tournament in August before returning to Sweden to play in the SuperElit league. He concluded the year winning a gold medal with Sweden’s U18 team at the 2013 World Junior Championship in Sochi. Johansson played 29 regular season SuperElit league games and had a 2.91 goals against and .899 save percentage. He was 0-2 with a 1.93 goals against and .933 save percentage as Brynas was swept by MODO in a first round playoff series. In three games at the Ivan Hlinka Tournament he had a 3.43 goals against and .870 save percentage and he was 3-1 with one shutout and a 2.23 goals against and.931 save percentage in Sochi.
2013-14: Johansson returned to Brynas — appearing in four games with the club in the re-christened SHL and playing for Brynas’ U20 team. He was 2-0-2 in SHL play with a 2.96 goals against and .914 save percentage. In 11 games with the U20 team he had a 1.83 goals against and .929 save percentage. Johansson was ranked second amongst international goaltenders in the Central Scouting final rankings and was selected by Buffalo in the third round (61st overall) in the 2014 NHL Draft.
2014-15: Johansson appeared in two SHL games with Brynas — splitting the year between Allsvenskan and the Brynas U20 team. He played in two games for the Sweden U20 team but was not with the squad at the 2015 World Juniors in Canada. He was 0-2 in SHL play and had a 6.30 goals against and .843 save percentage. Johansson had some success with Almtuna, finishing 6-3 with a 2.58 goals against and .896 save percentage in 10 Allsvenskan games. Almtuna missed the playoffs, finishing ninth. In seven preliminary games for the Brynas U20 team Johansson was 4-3 with a 3.47 goals against and .895 save percentage. He was 2-3 with a 3.81 goals against and .872 save percentage in six divisional games as Brynas finished eighth in the South Division. Johansson was 1-1 in two playoff games with a 3.52 goals against and .904 save percentage as Brynas lost to HV71 in a first-round series.
Johansson is a goalie with a big frame who likes to play deep in his net, a style popularized by fellow countryman Henrik Lundqvist. He is still fairly early in the development process and given his limited experience and exposure to elite competition, he is still a work in progress both in his technical skills and mental game.