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Expert Security Architecture

Company: Canadian National Railway Company

Location: montréal- st, London

Posted: June 19, 2026

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Position Details

Expert Security Architecture

The purpose of this role is to evaluate technology solutions, configurations, and designs against security requirements, and define cybersecurity reference architectures and standards across enterprise environments at CN (including cloud, on-premises, data, and emerging technologies such as AI). This role drives secure-by-design principles across engineering and operational teams by integrating security into architecture practices, development workflows, and enterprise technology decisions.

Main Responsibilities

  • Define and implement enterprise security architecture controls to manage risk while enabling business capabilities across domains such as cloud platforms, enterprise applications, data, AI/ML, industrial systems, networking, and end-user technologies.
  • Ensure security architecture across enterprise environments is maintainable, sustainable, and properly documented.
  • Define and enforce securit...