- Joined HD in 2022 after more than 15 years as a diplomat representing Singapore at the United Nations, World Intellectual Property Organization, UN Framework Convention on Climate Change and World Trade Organization
- Chaired UN negotiations and represented the Group of 77 and China in talks on sustainable development issues. Also Singapore’s deputy permanent representative to the WTO and WIPO
- Co-authored “Negotiating at the United Nations: A Practitioner’s Guide” that is used as a textbook at various institutions
- Conducts workshops and lectures on negotiation and leadership in diplomacy for governments, universities and other training programmes