Senior Specialist Cybersecurity Operations Center-CA

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Req Id: 1032 Job Location: Montreal - QC Business Unit: Technology Highest Level Division: Information Security Posting Start Date: 10/14/26 Posting End Date: 11/02/2026 French/English Bilingual Requirement: No Hiring Salary Range: $89900 - This range represents the hiring range. Salaries are determined individually depending on skills and experience. You will also be eligible to an annual bonus, employee share investment program (ESIP), Pension, Advantages and other perks. At CN, we are committed to our pursuit of excellence. We take pride in delivering work of the highest standard, continually innovating to shape the railroad of the future. As responsible railroaders, we make the right decisions every time, putting safety first, acting with unwavering integrity, and holding ourselves accountable for our actions. We believe in succeeding together—by fostering inclusivity and collaboration, we sustainably deliver exceptional results for our customers. Join us today and get your career moving

Job Summary

The incumbent is responsible for providing technical leadership to the Network Security Management team. The role improves and maintains the cyber security posture of CN's networks enabling business functionality across all systems and environments by applying best practices and security solutions. Acting as a Subject Matter Expert (SME), the incumbent oversees development and integration of new network security functionality into CN's networks and collaborates with various relevant teams.



The role is accountable for assessing new projects and recommending solutions to surfacing issues. The position provides mentoring and training and acts as a third-level support.

Main Responsibilities

Operation Excellence

- Lead and execute installations, upgrades, configurations and maintenance of the network security infrastructure
- Perform a quality review of infrastructure changes and implementations
- Provide third-level support including detailed threat analysis of log data from security devices
- Lead life cycle project initiatives (analyze, test and deploy)
- Lead problem investigations and follow‑up on resolutions
- Perform preventive maintenance tasks
- Monitor and maintain system availability and performance
- Identify Key Performance Indicators (KPIs) related to the capacity, performance of the service and network security
- Oversee gatherings of baseline data and ensure that it is assessed against current data for improvements
- Create and maintain operational documentation such as run books, diagrams and system layout
- Troubleshoot and correct defects with vendors
- Apply and ensure compliance with all appropriate CN Technology standards (Security, Architecture, Project Delivery Methodology, Sarbanes‑Oxley Act (SOX))




- Respond to investigations and queries of InfoSec Team and Auditors related to breaches
- Assist with root cause analyses for events and incidents when underlying issues are unknown

Delivery

- Participate in project analysis and planning phase to estimate effort and build activity plan
- Collaborate with project team to deliver required infrastructure
- Participate in project transition and support strategies (T2C)
- Lead network security assigned strategies and projects
- Review and maintain Engineering standards and specification documents
- Create and maintain operational documentation (run books, how-to, diagrams, system layouts, standard operating procedure (SOPs))
- Assist on technical proposals, specifications, requirements and design documents
- Coordinate with internal and external stakeholders and vendors as necessary

Practice Evolution

- Engage with team to define, design, and implement network security solutions to enhance cyber security posture
- Participate in evaluation and recommendation of network security tools and technologies for existing and future business needs
- Collaborate with team members to develop and implement process improvements
- Communicate complex designs and information to peers
- Provide training to multiple teams
- Recognize and act on Operations and Business risks and recommend solutions

Working Conditions

The role has standard working conditions in an office environment with a regular workweek from Monday to Friday and is eligible to participate in CN's hybrid work model. The role involves managing priorities and delivering work within established timelines, with support from the team to ensure susta

📌 Senior Specialist Cybersecurity Operations Center-CA (Montreal)
🏢 Canadian National
📍 Montreal