Paphangkorn joined Siam Premier in 2025 as an associate in the Litigation and Dispute Resolution practice. He regularly advises clients on a diverse range of legal matters and is particularly familiar with labour and employment issues. His experience also extends to civil, commercial, and criminal matters, where he assists both individual and corporate clients throughout various stages of litigation and dispute resolution.

Paphangkorn is a member of the Lawyers Council of Thailand.