Tiejun is an Associate Professor in Remote Sensing and Geospatial Ecology at the University of Twente. He received his Ph.D. degree in Spatial Ecology from Wageningen University in 2009 and the MSc degree in GIS and Remote Sensing from the International Institute for Geo-information Science and Earth Observation (ITC) in 2003. His career includes 12 years working in the area of nature conservation before moving to university work.

His research focuses on developing and utilizing advanced remote sensing and machine learning technologies to monitor wildlife populations and habitat dynamics. His research helps inform environmental management, supporting sound decision-making on wildlife conservation and the sustainable use of natural resources in a rapidly changing world.

He has successfully supervised 19 Ph.D. students and 35 Master’s students. He is currently supervising 6 Ph.D. students. He also supervises Ph.D. student in collaboration with the University of Oxford. In addition, he is regularly invited to serve as a member of doctoral degree examination committee in Belgium and in South Africa.