Sonny works in the Conservation Division of the Malaysian Nature Society since 1997, working with the local communities in nature conservation, and incorporating ecotourism as part of livelihood improvement. Highlights of his work: Rafflesia conservation with the Semai villagers, bird flyway coastal wetlands conservation with rural communities, Kuala Selangor Nature Park for Ramsar, formation of Firefly Komuniti, started the World Firefly Day in 2018. Currently, he is the honorary secretary for the Fireflyers International Network and co-chairs the IUCN SSC Firefly Specialist Group.