Sandra is a former Commissioner of KomNas HAM (2012-2022). She actively involves in work with sea nomads, and facilitates partnerships with civil society, peoples organizations and donors. Ibu Sandra is A pioneer and founder of environmental justice organizations such as Lembaga Studi dan Advokasi Masyarakat (ELSAM), Lembaga Bela Banua Talino (LBBT Pontianak), and Indonesia Center for Environmental Law (ICEL). Sandra is also a Fellow of Samdhana and served as a former member of the Board of Trustees.