Dr. Cécile Siewe

Director General Industrial Sectors & Chemicals Directorate Environmental Protection Branch Environment and Climate Change Canada


Dr. Cécile Siewe is Director General in Environment and Climate Change Canada (ECCC) where she leads the Industrial Sectors and Chemicals Directorate (ISCD) in the Environmental Protection Branch (EPB). Before that she was with Natural Resources Canada as Director General of CanmetENERGY-Devon from 2016 – May 2021. Dr. Siewe previously spent seven years working at the Canada Revenue Agency as a Regional Technology Advisor for Oil & Gas in the Scientific Research & Experimental Development Program (SRED). Prior to re-joining the federal government, Dr. Siewe worked in the private sector in the oil sands and heavy oil. She worked at Shell Canada for over 10 years, during which time she held a number of different technical and commercial management positions including Research & Development, Refinery Planning & Optimization, and Joint Venture Business Optimization. Dr. Siewe is a member of the board of Directors for Petroleum Technology Alliance Canada (PTAC), Petroleum Technology Research Centre (PTRC), and a Steering Committee member of the Clean Resources Innovation Network (CRIN). Dr. Siewe has a Ph.D. in Chemical Engineering from Imperial College, University of London, UK. She also holds an MBA from the University of Calgary, and a Bachelor of Science in Industrial Chemistry from City University in London, UK.