Marvin Chew is a Signature Member of National Watercolour Society (NWS), USA and former Vice-President and current member of Singapore Watercolour Society (SWS) and member of Singapore Art Society (SAS). He is currently represented by Cape of Good Hope Gallery and ArtSafe Gallery in Singapore, as well as Hoan Gallery in Kuching, Malaysia. He has been the brand ambassador of Royal Talens art materials since 2021.

Marvin is well-known for his vibrant watercolours depicting landscapes, rural villages, and street scenes of South East Asia. Marvin has held six solo exhibitions since becoming a full-time artist in 2012, and participated in various local group shows and international art events such as the NWS International Annual Exhibitions in the USA, and the International Watercolour Masters in the UK, amongst others.

Marvin's works have also been featured in art books and magazines such as Splash 17 and 19, The Art of Watercolour, and Paint magazine by SAA. His artworks are in private and corporate collections of art lovers, corporations, and government bodies around the world.