Jan Harmsen is currently an independent consultant in sustainable process innovation. He provides advice and courses to industry and academia. He is a course conductor of Sustainable Design at Delft University of Technology. He has been a part-time professor of Sustainable Chemical Technology at Delft University of Technology and Groningne University 1997-2013.
After his graduation in chemical technology at Twente University in 1977, he joined Shell. There he held professional positions in process research, process development, reaction engineering, process concept design, process implementation at manufacturing sites in Rotterdam and South-Korea, and finally a research position in process intensification till 2010.