Duncan Stewart is a Partner in the Deep Tech Venture Fund at the Business Development Bank of Canada (BDC), where he brings deep science and technology expertise in both the private and public sector to the venture capital team at BDC.

From 2012 to 2019 he was Director General of the NRC Canadian national lab Security and Disruptive Technologies research centre, leading a team of more than 100 research physicists and chemists working on disruptive quantum science and technology, including scientific research, technology innovation, IP generation and licensing, and technology transfer. This team was repeatedly recognized among the top performing science teams inside the Govt of Canada. From 2009 to 2012, he was Director of Research at the NRC Steacie Institute for Molecular Sciences.

Before joining NRC in 2008, he worked for a decade at Hewlett-Packard (HP) Laboratories in Silicon Valley, California, in the flagship Quantum Science Laboratory, leading DARPA-funded projects in disruptive computing technologies.