Principal I&C Engineer

You will lead the development and implementation of I&C systems across nuclear new build and modernisation projects, ensuring safety-critical system performance and regulatory compliance.

• Collaborate with electrical and mechanical engineers to achieve fully integrated designs.
• Prepare and review technical documentation to high regulatory standards.
• Design and review instrumentation, control logic, and safety system architectures.
• Provide multidisciplinary oversight across civil, mechanical, electrical, and systems engineering packages.
• Lead engineering input into new build and infrastructure development projects.
• Support cybersecurity, redundancy, and diversity requirements for nuclear I&C systems.
• Coordinate with internal teams and client stakeholders to ensure seamless project integration.
• Specify and integrate control equipment (PLC, DCS, SCADA, and field instrumentation).
• Ensure compliance with CNSC, NRC, and IAEA regulatory frameworks.
• Ensure compliance with IEC, IEEE, and CNSC standards.
• Support feasibility studies, site assessments, and technology evaluations.
• Provide electrical input into feasibility studies and plant layouts.

At Assystem, our mission is to accelerate the global energy transition. With more than 8,000 Switchers worldwide, we combine deep engineering expertise and project management capability with advanced digital solutions to help our clients deliver safe, sustainable, and innovative infrastructure.

While your primary base will be Toronto, the role may require hybrid work or on-site presence at different client locations, depending on project deployment.

We are seeking an experienced Principal I&C Engineer to support nuclear new build and energy infrastructure projects across Canada. Based in Toronto, you will provide technical leadership and multidisciplinary input during the pre-FEED and development phases, ensuring the successful delivery of major client programmes.

• Strong stakeholder management and communication skills.
• Previous international or large-scale infrastructure project experience.
• Familiarity with digital control systems used in CANDU or AP1000 technologies.
• Experience with safety-class I&C systems and software lifecycle processes.
• Proven track record delivering pre-FEED and design-phase projects.
• P.Eng (or equivalent) with eligibility to work in Canada.
• Proven extensive experience within the nuclear or energy sector.
• Demonstrated ability to lead multidisciplinary teams and interface with clients.
• Experience working with major Canadian nuclear operators.
• Strong understanding of regulatory frameworks and safety culture.
• Proven ability to lead multi-vendor I&C design coordination.

At Assystem, you’ll have the chance to work on high-impact projects that contribute directly to Canada’s net-zero future. We offer a collaborative, inclusive environment, global career development opportunities, and the satisfaction of being part of a mission-driven engineering community transforming the world’s energy systems.

Permanent | Hybrid Working (Project-dependent)