While playing for HC Davos, Hiller won Switzerland's championship in 2002, 2005 and 2007, as well as the Spengler Cup in 2004 and 2006. In 2006–07, Hiller set a career-high win record with 28–16–0 in 44 games. Following the conclusion of the season, he was signed as an undrafted free agent by the NHL's Anaheim Ducks in May 2007.[citation needed]
Hiller recorded his first career NHL shutout in the 2008–09 season, defeating the Los Angeles Kings, 2–0. Following his strong regular season play, the Ducks named Hiller their starting goaltender for the 2009 Stanley Cup playoffs over incumbent starter Giguère. Hiller started his first career playoff game on 16 April 2009, recording a shutout over the San Jose Sharks in a 35-save performance. He and the Ducks ousted the Presidents' Trophy-winning Sharks in six games, marking only the fourth time in NHL history that the Presidents' Trophy-winning team had been eliminated in the playoffs' first round. The Ducks next matchup was the second-seeded Detroit Red Wings, a series which Detroit won in seven games. Nonetheless, many felt that it was only due to Hiller's goaltending that the Ducks were able to take the defending Stanley Cup champions to seven games.[citation needed]
Midway through the next season, on 30 January 2010, Hiller signed a four-year contract extension with the Ducks going through to the 2013–14 season. The next day, the Ducks traded Giguère to the Toronto Maple Leafs, cementing Hiller's status as the Ducks' starting goaltender.[citation needed] Hiller earned a spot in the 2011 NHL All-Star Game, held in Raleigh, North Carolina, on 30January. On 2February, after his first game returning from the All-Star weekend, Hiller felt lightheaded and was slow to react, allowing three goals on ten shots in the opening period of a 4–3 loss against the visiting San Jose Sharks. He sat out the next four games before shutting out the Edmonton Oilers 4–0 on 13February, but the symptoms reappeared. Hiller then sat out another 15 games, making what would be his last appearance of the season during a 5–4 loss to the Nashville Predators on 24 March.[citation needed] In August 2011, Hiller said he was symptom-free.[2]
Hiller with the Ducks in 2012
During the lockout-shortened 2012–13 season, Hiller helped the Ducks place second overall in the Western Conference. During the 2013 playoffs, however, the Ducks were eliminated in a seven-game series against the Detroit Red Wings for the second time in five years.[citation needed]
On 1 July 2014, after his contract had expired with Anaheim, Hiller signed a two-year contract as an unrestricted free agent with the Calgary Flames at an annual average of $4.5million.[3] In his first season in Calgary, 2014–15, he emerged as the Flames' starting goaltender, partaking in most of the Flames' regular season games and 7 of the Flames' 11 2015 playoff games. In Game 6 in the first round of the playoffs, he was pulled in favour of backup Karri Rämö after conceding two goals on three shots. Hiller started Game 1 of the second round against his former team, the Ducks, but was again pulled in favour of Rämö. Rämö remained in goal for the rest of the series, which the Flames lost in five games.[citation needed]
Hiller struggled throughout the 2015–16 season, recording a 9–11–1 record with a 3.51 GAA. Calgary opted not to re-sign Hiller or Rämö, instead acquiring Brian Elliott from the St. Louis Blues after the season to replace them.[citation needed]
On 19 April 2016, Hiller agreed to a three-year contract with EHC Biel of the Swiss National League A (NLA) worth CHF 2.1million.[4] On 27 August 2018 Hiller was signed to an early one-year contract extension by EHC Biel, through the 2019-20 season. Before the 2019-20 season, Hiller announced his intention to retire from professional hockey at the conclusion of the season, after a 4-year stint with EHC Biel.
On 16 March 2020 Hiller officially announced his retirement from professional hockey.