Dr Lim is the Chief Executive of Science Centre Singapore and concurrently an Associate Professor of Biological Sciences, National University of Singapore. A major contributor to science education and outreach, he has also championed the STEM Applied Learning Programmes in schools. He has given numerous talks to popularise science locally and globally. He is President of the Singapore Association for the Advancement of Science, President of the Singapore National Academy of Science, and the Vice President of the Association of Singapore Attractions Executive Committee. He is also in the Board of Directors of Temasek Foundation CLG ltd. He is an elected Fellow of the Singapore National Academy of Science and Fellow of the Singapore Institute of Biology. He serves as President of the Asia Pacific Network of Science and Technology Centres since 2016. He has also served in the Board of the US Association of Science & Technology Centers from 2013-2018.