Kim-Chuan Toh is the Leo Tan Professor in the Department of Mathematics at the National University of Singapore. He works extensively on convex programming, particularly large-scale matrix optimization problems such as semidefinite programming, and sparse optimization problems arising from machine learning and statistics. Currently he serves as a co-Editor for Mathematical Programming Series A, an Area Editor for Mathematical Programming Computation, and Associate Editor for several journals including SIAM J. on Optimization, Operations Research, and ACM Transactions on Mathematical Software. He received the INFORMS Optimization Society Farkas Prize in 2017, and the triennial Mathematical Optimization Society Beale-Orchard Hays Prize in 2018 and Paul Tseng Memorial Lectureship in Continuous Optimization in 2024. He is a Fellow of the Singapore National Academy of Science, and a Fellow of SIAM.