Damir is the Professor of Sanitary Engineering at IHE Delft and an Endowed Professor at Delft University of Technology. He is also a Co-founder and Director of the Global Sanitation Graduate School and Co-founder of the Global Partnership of Laboratories for Fecal Sludge Analysis. His areas of expertise include pro-poor and emergency sanitation, fecal sludge management, urban drainage, and wastewater treatment.

He is a pioneer in the practical application of models in wastewater treatment practice in developing countries. He co-invented DEMOS©: Digital Epidemic Observatory and Management System and the Shit Killer® device for excreta management in emergencies, the award-winning eSOS® Smart Toilet, and the medical toilet MEDiLOO®, with funding from the Bill & Melinda Gates Foundation.