Lewis first played for Geylang United, and is recognised as one of an outstanding trio of keepers – the other two being Shahril Jantan and Hassan Sunny — that have turned out for the club. After a brief career at Geylang, where he made a total of 60 appearances, he joined the Young Lions to become part of the first Young Lions side to play in the S.League in 2003. In August 2004, the police regular joined Home United (which is affiliated to the Singapore Police Force) on a short-term contract and played for the "Protectors" in their AFC Cup campaign, before returning to the Young Lions. He made a return to Home United in 2005, where he has remained until the end of his career.