He is the Co-Founder and full-time Executive Director at Our Father’s World. In 2023, he co-authored Loving Our Father's World, a primer on faith-based environmental action written for Christians in Southeast Asia. Dennis graduated valedictorian from the environmental studies programme at the National University of Singapore and is currently studying part-time at Trinity Theological College. In his free time, he enjoys spending time with nature, playing board games and going to the theatre.