Mubin is deputy opinion editor at The Straits Times, where he edits and writes commentaries spanning a diverse range of topics. He began his journalism career in broadcast as a producer-presenter before becoming deputy editor at CNA Digital, where he oversaw coverage of both foreign and local breaking news. Mubin has covered stories across cities in Asia as a broadcast and digital journalist, interviewed politicians and prominent figures, and contributed commentaries on global and domestic affairs. He holds a postgraduate degree in international relations and has taught journalism at the tertiary level.