He has competed in three World Championships for his native Switzerland, and a gold medalist representing the Philippines at the 2025 Asian Winter Games.

Pfister returned with his brother as part of the Swiss team again at the 2018 World Men's Curling Championship.

That season, Team Pfister won the German Masters which would qualify for them to play in the 2018 Humpty's Champions Cup Grand Slam event.

[3]In their second season together as a team, the Pfister rink would win the 2024 Pan Continental Curling Championships B-Division, qualifying them to compete in the 2025 Pan Continental Curling Championships A-Division, as well as a spot in the 2025 Pre-Olympic Qualifying Event.

The rink would also go on to represent the Philippines at the 2025 Asian Winter Games, where they would win the gold medal, beating South Korea 5–3 in the final.