[3][4] Despite this, his junior team of Jay McWilliam, Hammy McMillan Jr. and Billy Morton found success on the men's tour during the 2012–13 season.

[5] The following season, the Dumfries rink continued their success with two more semifinal appearances at the Curling Masters Champéry and the Edinburgh International.

[6] The team also qualified to represent Great Britain at the 2015 Winter Universiade where Hardie, Smith, Thomas Muirhead, Alasdair Schreiber and Stuart Taylor would finish with a 6–3 round robin record.

[10] This victory included wins over higher ranked team's such as Mike McEwen, John Shuster and Tom Brewster.

[12] After the season, Hardie joined forces with Bruce Mouat to form a new team with second Bobby Lammie and lead Hammy McMillan Jr..

[16] In the new year, the team ran the table to win the 2018 Scottish Men's Curling Championship, defeating the Greg Drummond rink in the final.

[17] They then faced the Kyle Smith Olympic team in a best-of-three playoff to determine who would represent Scotland at the 2018 World Men's Curling Championship.

[19] At the world championship in Las Vegas, Nevada, the team lost just one game in the round robin to Sweden's Niklas Edin.

[20] The team ended the season at the 2018 Players' Championship and 2018 Humpty's Champions Cup Slam events where they reached the quarterfinals and semifinals respectively.

[23] After finishing the round robin with a 7–2 record, the rink beat Italy's Joël Retornaz and Sweden's Niklas Edin in the semifinal and final to claim the gold medal.

[32] The team was set to represent Scotland at the 2020 World Men's Curling Championship on home soil in Glasgow before the event got cancelled due to the COVID-19 pandemic.

[35] For much of the 2020–21 season, there was no tour due to the pandemic, but Team Mouat won a series of domestic challenges put on by the British Curling Association.

[41] They had another stellar season in 2021–22, starting the year by winning the 2021 Stu Sells Oakville Tankard and then following it up with the 2021 Masters, their fourth Slam title.

In the playoffs, they beat the defending champion John Shuster rink from the United States before losing the gold medal to Sweden, skipped by Niklas Edin.

[50] After a quarterfinal appearance at the 2023 Canadian Open, Team Mouat went undefeated to claim their fourth Scottish men's championship, defeating the James Craik junior rink in the final.

After defeating Retornaz in an extra end, the team shot a 96 percent game in the final to down Canada's Gushue 9–3 and claim the gold medal.

[56] They then beat Switzerland's Schwaller in the semifinals before defeating Sweden's Edin 6–5 in an extra end for their fourth European title.

After having limited success at the previous three Slams, Team Mouat claimed their sixth title with an undefeated run at the 2024 Canadian Open, defeating the Brendan Bottcher rink in the final.

After defeating the United States in the first round, they lost both the semifinal and bronze medal game to Canada and Italy, failing to defend their title and finishing fourth.

[65] After him and Wright failed to qualify again in 2022, Hardie joined forces with five-time national mixed doubles champion Gina Aitken for the 2023 championship.

[67] In 2017, Hardie and his team of Rhiann Macleod, Billy Morton and Barbara McFarlane won the Scottish Mixed Curling Championship.