Yeshua Moser-Puangsuwan has lived and worked in a dozen countries, spending most of his adult life in Southeast Asia.. He has been involved in the Landmine and Cluster Munition Monitor since its inception in 1998, first as a country researcher (Myanmar/Burma, Lao PDR, Singapore). Since 2005 Moser-Puangsuwan has worked for Mines Action Canada, providing ban policy research coordination to the Landmine and Cluster Munition Monitor for Asia, the Pacific, and Middle East and North Africa regions, and on non-state armed groups globally. He is the author of the blog Mine Free Myanmar.

From 1992 to 2005 Moser-Puangsuwan was the Southeast Asia regional representative of Nonviolence International. He was also a co-founder of the International Action Network on Small Arms (IANSA). He is a board member of Nonviolence International Canada. He is an Advisory Board member for the Grant Making International Nonviolence Trainers Fund of the AJ Muste Institute (USA). He holds a MA in Peace and Reconciliation from Coventry University, UK and a PhD in Peace Studies from Gujarat Vidyapith in Ahmedabad, India.​