Jens Nielsen has an MSc degree in Chemical Engineering and a PhD degree (1989) in Biochemical Engineering from the Danish Technical University (DTU), and after that established his independent research group and was appointed full Professor there in 1998. He was Fulbright visiting professor at MIT in 1995-1996. At DTU he founded and directed Center for Microbial Biotechnology. In 2008 he was recruited as Professor and Director to Chalmers University of Technology, Sweden, where he is currently directing a research group of about 50 people. Jens Nielsen has published so far more than 550 papers that have been cited more than 18,000 times (current H-factor 69), and co-authored more than 40 books. He is inventor of more than 50 patent and has founded several biotech companies. He has received numerous Danish and international awards and is member of the Academy of Technical Sciences in Denmark, National Academy of Engineering in USA, the Royal Danish Academy of Science and Letters, the American Institute for Medical and Biological Engineering, the American Academy of Microbiology, the Royal Swedish Academy of Engineering Sciences, the Royal Swedish Academy of Sciences, and the Royal Society of Arts and Sciences in Gothenburg. He is a founding president of the International Metabolic Engineering Society.