Senior Specialist Cybersecurity Operations Center-CA Please note that the language you select on this site will be the primary language used for all future communications regarding your application. 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, Benefits 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 recent 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 sustainable and effective workload management. The position requires minimal travel (5%) to workshops and training. Experience Relevant Experience Minimum 10 years of overall work experience Minimum 5 years of demonstrated experience in providing hands‑on technical expertise with network security solutions deployed in large corporate environments Advanced experience with Next Generation Firewall (NGFW) technologies and capabilities Experience with Wide-Area Networks (WAN) technologies Candidates with an equivalent combination of education, training, and experience will be considered Education/Certification/Designation Bachelor's Degree in Computer Science, Information Systems or equivalent Certification in Certified Information Systems Security Professional (CISSP), Cisco Certified Network Professional (CCNP) Security, Cisco Certified Internetwork Expert (CCIE) Security, Certified Network Security Administrator (PCNSA), Certified Network Security Engineer (PCNSE) or other security or network security related certification* Candidates with equivalent practical experience, education, or training will be considered * Any requirement marked with (*) will be considered an asset (not mandatory) Competencies We Care About Each Other We Strive for Excellence We Succeed Together We Lead Responsibly Compliance Build trust Reading the environment Political acumen AI Literacy and data orientation Technical Skills/Knowledge Advanced understanding of core security technologies such as NGFW, Intrusion Detection System (IDS), Intrusion Prevention System (IPS), Distributed Denial-of-Service (DDoS/DoS), Virtual Private Network (VPN), Network Access Control (NAC), Advanced Thread Prevention, Uniform Resource Locator (URL) filtering, Domain Name System (DNS) Security and Remote Access Deep understanding of common network and application stack protocols such as Transmission Control Protocol (TCP), Internet Protocol (IP), Internet Control Message Protocol (ICMP), Transport Layer Security (TLS), Hypertext

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