Early career

Firus began learning to skate in 2001.^[1] He teamed up with Caelen Dalmer in May 2008.^[3][4] Dalmer/Firus were coached by Rod Mackie and Shae Zukiwsky before joining Megan Wing and Aaron Lowe in Burnaby, British Columbia.^[5][6] They competed at two ISU Junior Grand Prix events (in 2011 and 2012) and won the junior bronze medal at the 2013 Canadian Championships. Their partnership ended in 2013.^[7]

Firus and Lauren Collins had their first tryout together in February 2014 and agreed to form a partnership in May.^[2] They decided to train at the Mariposa School of Skating in Barrie, Ontario, coached by David Islam, Kelly Johnson and James Callan.^[2] Collins/Firus finished sixth at a Junior Grand Prix event in Japan and won the junior silver medal at the 2015 Canadian Championships. After moving up to the senior level, they placed fifth at the 2015 CS Nebelhorn Trophy and tenth at the 2016 Canadian Championships.

2016–2017 season: Debut of Soucisse/Firus

Firus teamed up with Carolane Soucisse in 2016. They decided to train in Montréal under the guidance of Marie-France Dubreuil and Patrice Lauzon.^[8][9] The two placed seventh at the 2017 CS Autumn Classic International and had the same result at the International Cup of Nice. They finished fourth at the 2017 Canadian Championships.

2017–2018 season

Soucisse/Firus participated in two ISU Challenger Series events, placing fifth at the 2017 CS U.S. International Figure Skating Classic and fourth at the 2017 CS Finlandia Trophy.^[10] They then made their Grand Prix debut at the 2017 Skate Canada International, where they placed seventh.

In January, they placed third in the short dance, fourth in the free dance, and fourth overall at the 2018 Canadian Championships.^[11] As the fourth-place finisher, they were assigned to the 2018 Four Continents Championships, their first ISU Championship event. They placed third in the short and second in the free, winning the silver medal.^[12] Firus said the two were "ecstatic" at the result, having achieved their goal of a medal.^[13]

Following the 2018 Winter Olympics, Tessa Virtue and Scott Moir withdrew from Canada's delegation to the 2018 World Championships in Milan. Soucisse/Firus, as the first alternates, took their places, making their World Championship debut. They placed eleventh in the short dance, fourteenth in the free dance, and fourteenth overall.

2018–2019 season

Soucisse/Firus began their season at the 2018 CS Autumn Classic International, where they won the bronze medal after placing third in the rhythm dance and fourth in the free dance. Firus remarked that he felt they had left a few technical points on the table but was otherwise satisfied with their performance.^[14] At their second Challenger event, the 2018 CS Finlandia Trophy, they finished fourth overall, having placed third in the rhythm dance and fifth in the free skate following an error from Soucisse on the one-foot step sequence in the latter.^[15]

The duo had two Grand Prix events for the season, beginning with the 2018 Skate Canada International, where a fall on the midline step left them in ninth place after the rhythm dance. They subsequently placed seventh in the free dance and eighth overall. At their second event, 2018 NHK Trophy, they placed fifth in both segments and fifth overall, setting a new personal best in the free dance.^[16]

Following the Grand Prix, the two opted to return to their previous season's free dance, as the Weeknd medley they had been using had not received the scores they would have wanted. They placed fourth in the rhythm dance at the 2019 Canadian Championships.^[17] The free dance proved difficult, with Soucisse struggling on her twizzles and falling toward the end of the program. They were sixth in the free dance and dropped to fifth overall.^[18]

2019–2020 season

Soucisse/Firus were assigned to two Challenger events to begin the season, placing fifth at the 2019 CS Autumn Classic International before winning the bronze medal at the 2019 CS U.S. Classic.^[19]

On the Grand Prix, they were seventh to begin at the 2019 Internationaux de France.^[20] Soucisse/Firus placed eighth at the 2019 NHK Trophy.^[21]

With training mates and presumptive silver medalists Fournier Beaudry/Sørensen sitting out the 2020 Canadian Championships, Soucisse/Firus competed with Lajoie/Lagha for the silver medal. Both teams made errors in the rhythm dance, with Soucisse putting her free foot down to regain balance at one point in the Finnstep pattern dance, and Soucisse/Firus placed third in that segment.^[22] Early in the free dance, Firus fell on the one-foot step sequence, and they finished third in that segment as well, winning the bronze medal. They were assigned to compete at the 2020 Four Continents Championships in Seoul.^[23] They placed seventh at Four Continents, with Firus falling again in the free dance.^[24]

Following the results of Four Continents, Soucisse/Firus were named as alternates for the Canadian team to the 2020 World Championships and subsequently were added to the team after Fournier Beaudry/Sørensen were judged unable to compete. Shortly afterward, the World Championships were cancelled due to the COVID-19 pandemic, which they later called "a big low" for them. On April 16, 2020, Soucisse/Firus announced that they would be moving to train at the Scarboro Figure Skating Club under Carol and Jon Lane and Juris Razgulajevs.^[25]

2020–2021 season

Soucisse/Firus were assigned to the 2020 Skate Canada International, but this event was also cancelled due to the pandemic.^[26] Due to a minor training injury, they were unable to participate in filming for the virtual 2021 Skate Canada Challenge and were granted a bye to the 2021 Canadian Championships.^[27] However, the championships were subsequently cancelled.^[28]

Soucisse/Firus were named as alternates to the 2021 World Championships.^[29] With Canada's mandatory two-week quarantine for returning athletes, however, no member of the World team was assigned to the 2021 World Team Trophy, and Soucisse/Firus were assigned as Canada's entry in the dance segment.^[30] They placed sixth in both of their segments of the competition, and Team Canada finished in sixth place.^[31][32][33]

2021–2022 season

Soucisse/Firus made their season debut at the 2021 CS Autumn Classic International, where they placed fifth.^[34] They were eleventh at the 2021 CS Finlandia Trophy after a rhythm dance error left them in fourteenth place after that segment. Soucisse said, "there's some work to do on the rhythm dance, but the programs are taking form and trending in the right direction."^[35]

On the Grand Prix, Soucisse/Firus placed seventh at the 2021 Skate America.^[11] They were initially assigned to the 2021 Cup of China as their second Grand Prix, but following its cancellation they were reassigned to the 2021 Gran Premio d'Italia.^[36] They placed seventh there as well, with Firus saying they were happy with their free dance performance.^[37]

Competing at the 2022 Canadian Championships, Soucisse/Firus finished in fourth place.^[38] They were fourth as well at the 2022 Four Continents Championships.^[39]

2022–2023 season

Beginning the season at the 2022 CS Nebelhorn Trophy, Soucisse/Firus won the bronze medal, their first international medal since 2019.^[40] They finished eighth at the 2022 Skate America, their first Grand Prix assignment.^[11] Soucisse/Firus then came sixth at the 2022 Grand Prix of Espoo.^[41] They finished fourth at the 2023 Canadian Championships.^[42]

Soucisse/Firus skated at the 2023 Irish National Figure Skating Championships and became the first ice dancers to win the senior title in the history of the event.

2023-2024 season

Following their release from Skate Canada, Soucisse/Firus made their international debut for Ireland at the 2023 Bosphorus Cup where they came eighth. They finished twelfth at the 2023 CS Golden Spin of Zagreb. They became the first ice dancers to represent Ireland at an ISU Championship at the 2024 European Championships at which they placed thirteenth. They won a bronze medal at the 2024 Egna Trophy, the first international ice dance medal for Ireland. At the 2024 World Championships, they finished in 20th place.

With Soucisse

With Collins

With Dalmer

With Soucisse for Ireland

With Soucisse for Canada

With Collins for Canada

With Dalmer for Canada

With Soucisse for Ireland

With Soucisse for Canada