Collegiate Buddin plays for the
NU Bulldogs in the
University Athletic Association of the Philippines (UAAP). He first suit up for the NU-backed
Sta. Elena team which took part in the
2022 Spikers' Turf Open Conference and guided by NU coach
Dante Alinsunurin. NU–Sta. Elena won the tournament. Buddin made his UAAP debut in
Season 85 in 2023 with NU winning its third title. He considered quitting volleyball due to his injury's effect in his mental health but eventually helped NU win their fourth title. Buddin helped NU win its consecutive fifth title in
UAAP Season 87 despite an ankle injury in May 2025.
National team Buddin was a prospect for the
Philippine national volleyball team but his injury in early 2024 led to his exclusion from the
2024 AVC Men's Challenge Cup. Buddin eventually debuted for the Philippines in the first lege of the
2024 SEA Men's V.League in August. He helped the Philippines win two bronze medals. He was named Best Outside Hitter for both legs of the 2024 tournament series. In 2025, Buddin featured in the
Alas Pilipinas Invitationals. He also played in the
2025 FIVB Men's Volleyball World Championship in the Philippines. ==Personal life==