2009-10: Tristan Jarry played bantam hockey in British Columbia with the North Delta Sundevils and was select by the Edmonton Oil Kings in the third round (46th overall) of the 2010 WHL Bantam Draft.
2010-11: Jarry split the goaltending duties with Brodie Burdeny for the Greater Vancouver Canadians midget major team in British Columbia. In 20 regular season games he had a 2.31 goals against. The Canadians advanced to the playoff semifinals after finishing in third place and Jarry played all six playoff games. Jarry won a gold medal with Team British Columbia in the 2011 Canada Winter Games; playing in two games with a 3.30 goals against and .868 save percentage as Jackson Whittle handled the bulk of the goaltending.
2011-12: Jarry appeared in 14 games for the WHL champion Edmonton Oil Kings in his first season of junior hockey and played for Canada Pacific in the 2012 U17 World Hockey Challenge. He was 8-2-1 for the Oil Kings and had a 2.93 goals against and .894 save percentage. Jarry did not see any post-season playoff action as a backup to starter Laurent Brossoit in the WHL playoffs and at the Memorial Cup. Jarry was 2-0 at the WHC, sharing the goaltending with Eric Comrie, and finished with a 1.95 goals against and .943 save percentage.
2012-13: Jarry returned to Edmonton for a second season, seeing a bit more time while Brossoit once again handled the majority of the goaltending. In 27 games for the Oil Kings he was 18-7 with a team-high six shutouts and had a 1.61 goals against and .936 save percentage. The Oil Kings again finished first in the Central Division. Jarry made his first playoff appearance, playing 26:30 minutes in relief of Brossoit in Edmonton’s Eastern Conference finals game with Calgary. He stopped all three shots he faced. Jarry was ranked third amongst North American goaltenders in Central Scouting’s final rankings prior to the 2013 NHL Draft.
2013-14: Jarry attended his first NHL training camp with the Penguins — signing a three-year entry-level contract with Pittsburgh in September 2013 — before returning to Edmonton and winning a Memorial Cup with the Oil Kings. He also played for the WHL in the Subway Series against Team Russia. In 63 regular season games for Edmonton he was 44-14-2 with eight shutouts and had a 2.24 goals against and .914 save percentage. Edmonton finished second to Calgary in the Central Division based on tiebreakers but rolled through the WHL playoffs; avenging a loss to Portland in the 2013 WHL Finals, defeating the Winterhawks to win the championship. Jarry was 16-5 in 21 playoff games with three shutouts; posting a 2.19 goals against and .925 save percentage. Edmonton lost two of three games in round robin play but defeated Val-d’Or in triple overtime in the semifinals and topped Guelph to capture the Memorial Cup. Jarry started all five games, finishing 3-2, and had a 2.80 goals against and .910 save percentage.
Jarry possesses a package of skills that scouts find extremely appealing. He has the prototypical size of an NHL goalie with a sound technical foundation. His glove and stick work are already thought to be pretty good and his mental game is considered top notch. Jarry is able to maintain an even temper under duress and his game is typically unaffected by bad goals. He has been extremely durable during his junior career with the Edmonton Oil Kings — playing in 90 games in 2013-14 when the team won the 2014 Memorial Cup.
Jarry attended the Canada U20 team's summer camp and was in training camp with the Penguins before being returned to Edmonton for his third WHL season in 2014-15. With several players having moved on the Oil Kings have slipped to the middle of the pack in the WHL but Jarry is once again seeing the bulk of the action. He also represented the WHL in the Subway Series against Russia though he was not chosen for Team Canada for the 2014 World Juniors. Long-term he has all the requisite skills to be a starting goalie at the NHL level one day and should benefit from the challenges and experienced gained with the rebuilding Oil Kings.