Executive Team
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The Canadian Nuclear Safety Commission (CNSC) executive team includes the President and vice-presidents who lead its branches and supports the regulation of nuclear energy and materials in Canada.
President
Pierre Tremblay
President and Chief Executive Officer, Canadian Nuclear Safety Commission
Pierre Tremblay began his term as President and Chief Executive Officer of the Canadian Nuclear Safety Commission (CNSC) on August 12, 2024.
Mr. Tremblay has more than 40 years of experience in nuclear engineering, operations, maintenance, security and management. Over the course of his career, he has held a variety of senior leadership roles in Canada’s nuclear sector and has contributed to the safe and effective oversight of nuclear activities.
As President and Chief Executive Officer, the duties of the President include both the governance and leadership of the tribunal that is the Commission, as well as the executive direction and management of the work of the organization. He is responsible for providing strategic direction and oversight of the organization as it fulfills its regulatory mandate.
Pierre Tremblay’s full biography is available on the President page.
Regulatory Operations Branch
Ramzi Jammal
Executive Vice-President and Chief Regulatory Operations Officer, Canadian Nuclear Safety Commission
With more than 35 years of experience in the nuclear sector, Ramzi Jammal brings a blend of executive leadership and scientific expertise to his work at the CNSC. Since joining in 1998, he has held several roles, including serving as acting Chief Executive Officer from October 2023 to August 2024. He currently serves as Executive Vice-President and Chief Regulatory Operations Officer.
Ramzi is widely recognized for his contributions to nuclear safety, both in Canada and on the international stage. In 2021, he received the prestigious Ian McRae award, honouring his substantive contribution to the advancement of nuclear energy in Canada.
Internationally, Ramzi’s exemplary work includes co-chairing a working group that contributed significantly to the Fukushima Daiichi Accident Report (2015) and serving as President of the Convention on Nuclear Safety (2016–18). As a member of the International Atomic Energy Agency (IAEA) Commission on Safety Standards, he has been instrumental in the development of the IAEA Code of Conduct on the Safety and Security of Radioactive Sources and the international categorization of radioactive sources.
In 2022, Ramzi was appointed Chair of the IAEA Regulatory Cooperation Forum (2022–25), which promotes the international sharing of regulatory knowledge in order to achieve better safety outcomes. His leadership was reaffirmed in 2025, when his chairmanship was renewed for an additional 3-year term.
In 2024, Ramzi was elected by consensus as President of the Eighth Review Meeting of the Contracting Parties to the Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management (2024–27). His priorities for this role are outlined in his speech to the Contracting Parties. As the first Canadian to hold this position, Ramzi’s election reflects the international community’s strong confidence in his leadership and in Canada’s commitment to nuclear safety.
Technical Support Branch
Dean Haslip
Vice-President, Technical Support Branch, and Chief Science Officer, Canadian Nuclear Safety Commission
Dean's extensive background in energy efficiency and nuclear physics positions him as a significant asset to the CNSC. His previous role at Natural Resources Canada, where he directed the Office of Energy Efficiency, highlights his capability in developing impactful policies like the Canada Green Buildings Strategy and in overseeing critical energy regulations.
With a PhD in nuclear structure physics, Dean combines scientific rigor with practical leadership experience. His tenure at CanmetENERGY-Ottawa, which involved directing research in various renewable energy technologies, further emphasizes his commitment to advancing Canada’s net-zero objectives. Additionally, his involvement in the multinational Mission Innovation initiative showcases his dedication to collaborative efforts in clean energy.
Dean's public service career, initiated at Defence Research and Development Canada, allowed him to rise through the ranks from research scientist to key leadership roles, emphasizing his expertise in radiological defence and operational research. His academic background, which includes contributions to the Sudbury Neutrino Observatory project, underlines his profound knowledge and passion for scientific advancement.
Overall, Dean’s multifaceted experience in energy efficiency and national defence will undoubtedly enhance the CNSC’s operational effectiveness and help navigate evolving challenges in the nuclear energy sector.
Regulatory Affairs Branch
Colin Moses
Colin was appointed Vice-President Regulatory Affairs Branch and Chief Communications Officer in June 2024.
With over 20 years of progressively senior and diverse positions in the organization, Colin was most recently Director General of the Information Management and Technology Directorate and Chief Information Officer from 2020 to 2024. In this role, he was accountable for the implementation of the CNSC’s Digital Strategy, enabling a modern, trusted, agile digitally enabled regulatory body.
Previously, Colin was Director General of the Directorate of Nuclear Substance Regulation, where he was responsible for the delivery of the CNSC's nuclear substance regulatory program. Earlier roles in the CNSC include Executive Advisor in the Office of the President, as well as experience in regulatory policy, nuclear facility regulation and engineering assessment.
Colin holds a bachelor’s degree in mechanical engineering from McMaster University.
Corporate Services Branch
Stéphane Cyr
Vice-President, Corporate Services, and Chief Financial Officer
Stéphane Cyr has been Vice-President, Corporate Services, and Chief Financial Officer of the CNSC since 2013. He joined the CNSC in 2009 as Director General, Finance and Administration. Since then, he has overseen a number of major initiatives and projects, such as the establishment of a cost recovery–based financial framework, the construction of the CNSC’s laboratory, the introduction of an integrated management reporting framework and the development of a financial guarantee program. Stéphane led the CNSC’s Digital Transformation, Financial Management Transformation and Workforce Renewal Strategy, and most recently oversaw the development of the CNSC’s Future of Work initiative.
Stéphane has been the CNSC’s mental health and inclusion champion since 2016.
From 2007 to 2009, Stéphane developed his skills at the Canadian Institutes of Health Research, where he held the position of Director General, Research Knowledge Creation Program, and later Director General, Finance and Corporate Planning.
From 2004 to 2007, Stéphane served as Executive Director, Financial Management Services, and Director, Transformation, at Human Resources and Social Development Canada. Prior to that, he worked at the Canadian Food Inspection Agency as Director, Accounting and Financial Systems, where he spearheaded, in particular, the implementation of the financial and reporting system and improvements to management and accounting practices.
He began his career at the Canadian International Development Agency, where he held several accounting and financial policy positions.
Stéphane is a graduate of the public service’s Executive Leadership Development Program (2018) and Accelerated Executive Development Program (2010), and the recipient of CPA Canada’s 2016 Award of Excellence in Innovation.
Stéphane is a member of the Chartered Professional Accountants of Canada and the Ordre des comptables professionnels agréés du Québec.
Legal and Commission Affairs Branch
Michelle Taylor
Michelle Taylor joined the CNSC as Vice-President, Legal and Commission Affairs, and Senior General Counsel in 2026. She is responsible for the CNSC’s legal team as well as for the Commission Registry, which is the hub for all of the Commission’s functions as a quasi-judicial tribunal and court of record.
With over 25 years of deep legal, governance, and compliance leadership experience, Michelle brings strategic insight and a global perspective to her work. After articling with the Federal Court of Canada, Michelle worked in private practice before pivoting to the practice of law in-house. Michelle acquired significant experience managing complex issues through her many years as senior counsel to a global mining corporation operating in the natural resources sector, and later, as general counsel and corporate secretary to the Canadian Commercial Corporation, a federal Crown corporation. Michelle was most recently general counsel and corporate secretary to a publicly listed corporation, leading a global team and strengthening partnerships and practices.
In addition to her extensive legal experience within global corporations, a federal Crown corporation and private practice, she is also an active member of the International Chamber of Commerce Committee on Arbitration and Alternative Dispute Resolution.
Michelle holds a bachelor of arts from Dalhousie University, a juris doctor from Western University and a master of laws from York University.
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