Casas is a Filipino audio engineer and sound designer, known for Seklusyon (2016), ML (2018) and Iti Magpupukaw (2023). He is the 2024 Gawad Urian winner for his work in Iti Magpupukaw, the Philippine entry for the Best International Feature Film category at the 96th Academy Awards. In 2025, he won at the 21st Cinemalaya Philippine Independent Film Festival Awards for Raging. He is also a six-time FAMAS nominee.