Gilbert is an award-winning writer/director/trainer residing in Singapore. His writing accolades include the top prize in the Singapore Screenplay Awards in 2001 and the merit award at the MDA Scriptwriting Competition in 2002. He is also the producer, writer, and director of the digital movie S11 (2006). S11 is the official selection at the Shanghai International Film Festival 2006 and also won the audience choice award at the Toronto-Singapore film festival. His second movie, Love Matters (2009), which he co-directed with Jack Neo, was a box office success in Malaysia and Singapore. In 2016, he co-directed 4Love, which tells the story of love; from strangers to marriage and then life together as an elderly couple. His movie 23:59 (2011), which he wrote and directed, was a critical success and popular with the Singapore audience. Its sequel, 23:59 The Haunting Hour was released in 2018.