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Added 1 min ago
SA
Electronics Engineering Technology Instructor
Southern Alberta Institute of Technology (SAIT)
Calgary, AB · Greater Calgary Metropolitan Area
- Full-time
Professional Engineer or qualification for registration with APEGGA is an asset.
Added 3 mins ago
C
Senior Java Developer - Assistant Vice President
Citi
Mississauga, ON
- Full-time
We are seeking a highly skilled Assistant Vice President (AVP), Software Senior Engineer, to design, develop, and maintain robust middleware solutions. The ideal candidate will have deep…
Added 14 mins ago
O
Senior Software Engineer, Observability (Auth0)
Okta
Toronto, ON
- $136,000 to $187,000 CAD / year
- Full-time
…the Auth0 Platform, and we are looking for an Observability Engineer to help ensure our Product and Platform Engineers can monitor and observe our platform while we continue to rapidly ship…
Added 19 mins ago
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Solution Engineer
Prophix
Toronto, ON · Etobicoke, ON
- $150,000 to $190,000 CAD / year
- Full-time
…where intelligent tools support better outcomes while people lead the decisions that…
Added 19 mins ago
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Program Director
Lightworks
Toronto, ON
- Full-time
Lead delivery governance across complex AI, cloud, and modernization programs, ensuring milestones, dependencies, risks, decisions, and outcomes are clear across all workstreams
Added 19 mins ago
MI
Data Engineer
Mycionics Inc.
Kitchener, ON
- Full-time
We are seeking a versatile Data Analytics & Backend Engineer to build the backbone of our data ecosystem. While our robots harvest mushrooms, your role is to harvest the data - architecting…
Added 19 mins ago
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Director, Project Controls Nuclear
Worley
Toronto, ON
- Full-time
Lead and develop a high-performing team of project controls professionals across a portfolio of nuclear projects.
Added 19 mins ago
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Test Development Engineer - Toronto
Island
Toronto, ON
- Full-time
Our Quality Group engineering team is looking for an excellent Test Development Engineer. The position requires deep understanding and hands-on experience in design and implementation of…
Added 24 mins ago
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Senior Software Engineer
Hays
Mississauga, ON
- Full-time
…engineering experience. In this key on-site role, you will lead the modernization and architecture of core diagnostic platforms, developing robust web applications, hardware integrations,…
Added 24 mins ago
AC
Product Development Engineer - Mechanical Design For Liquid Cooling
Amphenol Communications Solutions
Markham, ON
- Full-time
Position: Product Development Engineer - Mechanical Design for Liquid Cooling
Added 27 mins ago
Senior, Software Engineering (AEM + Workfront/Fusion)
DEPT®
Canada
You'll work alongside a Tech Lead/Principal Software Engineer, CMS (AEM) Architect, AEM engineers, QA, and client stakeholders. You don't need to know every corner of Adobe on day one. Good…
Added 27 mins ago
Principal Engineer, Data Path / Metadata / Performance (StorageGRID)
NetApp, Inc.
Vancouver, BC
…analytics, and exabyte-scale enterprise data. As a Principal Engineer for Datapath / Performance, you will own the architecture and technical direction of the StorageGRID S3 data path and…
Added 30 mins ago
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Senior Application Security Engineer
Nutrien
Calgary, AB
- Full-time
The Senior Application Security Engineer is a senior technical role responsible for advancing security across the software development lifecycle (SDLC). Working closely with application…
Added 33 mins ago
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Director of Production Engineering
Syntronic
Ottawa, ON
- Full-time
Lead root-cause analysis on yield loss, solder defects, component damage, test fallout, and escapes. Use structured problem solving (8D, fishbone, 5-Why, DOE) and deploy corrective actions…
Added 36 mins ago
VT
Machine Vision Application Engineer
Valiant TMS
Windsor, ON
- Full-time
Join Our Team as a Machine Vision Application Engineer!
Added 39 mins ago
Senior Software Engineer
Capgemini
Toronto, ON
…Able to act as a key contributor in a complex environment, lead the activities of a team for software design and software development. Acts proactively to understand internalorexternal…
Added 39 mins ago
GD
Principal Data & AI Engineer
General Dynamics Missions System International
Ottawa, ON
- $140,000 to $170,000 CAD / year
- Full-time
The Principal Data & AI Engineer will be responsible for establishing and maturing our enterprise data engineering capability, defining architecture and integration patterns, and leading…
Added 39 mins ago
Senior Security Engineer - Cloud Security
PagerDuty
Toronto, ON
Senior Security Engineer - Cloud Security (Platform Engineering, Kubernetes & Identity)
Added 42 mins ago
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Forward Deployed Engineer – AI, Data Engineering & MLOps / Toronto, ON (Onsite) - FTE
AceStack
Toronto, ON
- Full-time
Job Title: Forward Deployed Engineer – AI, Data Engineering & MLOps
Added 42 mins ago
U
Senior Software Engineer - Systems
UrbanLogiq
Vancouver, BC
- Full-time
We are hiring a Senior Software Engineer to develop and extend the systems layer of our platform: data pipelines, storage, and query infrastructure. You will report to our Director of…
Added 45 mins ago
T
Quality Engineer Manager, TD Securities
TD
Toronto, ON
- Full-time
Lead the creation of a comprehensive end-to-end detailed solution with overall accountability of feature delivery.
Added 45 mins ago
C
Senior Optical Engineer
Ciena
Ottawa, ON
- $94,100 to $150,300 CAD / year
- Full-time
As a senior technical contributor on the Optical Systems Performance (OSP) Team, the Optical Systems Engineer advances end-to-end optical fiber sensing architectures and system designs…
Added 45 mins ago
J
Senior Data Engineer
JLL
Toronto, ON · Canada Home Office - ON
- Full-time
As a Senior Data Engineer at JLL, you will leverage advanced technical expertise and enterprise-focused thinking to drive AI-powered automation that achieves strategic business objectives.…
Added 47 mins ago
A
Electrical Engineer
Agri-Neo
Toronto, ON
- Full-time
We are seeking an Electrical Engineer to support the design and execute the assembly and commissioning of industrial food pasteurization systems shipped globally. This role is a hands-on…
Added 47 mins ago
AS
Data Platform Engineer
AgileGrid Solutions
Canada
- Full-time
McKesson is seeking a Lead Data Platform Engineer to define and drive the future of our enterprise data ecosystem. This highly visible technical leadership position involves establishing…

Senior Specialist Cybersecurity Operations Center-CA

Montreal, QC, Canada

Full-time

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Job details

Job type: Full-time
Apply by: Nov 13, 2026
Posting language: English
Posted: Oct 14, 2026

Original job description

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 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 Transfer Protocol Secure (HTTP/HTTPS) and Internet Protocol Security (IPSEC)
Ability to analyze assembled network data to perform incident response and identify potential security issues
Knowledge of policies, procedures, and protocols in use by the CN
Knowledge in analyzing security risks and developing response procedures
Strong working knowledge and troubleshooting of Border Getaway Protocol (BGP), Open Shortest Path First (OSPF) and Enhanced Interior Gateway Routing Protocol (EIGRP) routing protocols
In-depth working knowledge and troubleshooting VPN technologies
Advanced working knowledge and troubleshooting of authentication mechanisms
Strong understanding of end-point platform such as Windows or Linux
Knowledge of scripting languages

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More about this job

Responsibilities

Lead the operation, maintenance, improvement, and lifecycle delivery of network security infrastructure, including installations, upgrades, threat analysis, incident investigations, and third-level support. Guide security projects and standards, collaborate with internal teams and vendors, assess risks and technologies, and provide technical mentoring and training.

Requirements

Requires at least 10 years of overall work experience, including at least 5 years of hands-on network security expertise in large corporate environments, with advanced NGFW and WAN experience. A bachelor's degree in computer science, information systems, or an equivalent field is specified; security or network certifications are listed, with starred certifications considered an asset, and equivalent practical experience may be considered.

Skills

Network Security
Next-Generation Firewalls
Wide-Area Networks
Intrusion Detection and Prevention
VPN Technologies
Network Access Control
DDoS Protection
Network Protocols
Incident Response
Security Risk Analysis
BGP, OSPF, and EIGRP
Authentication Mechanisms
Windows and Linux
Scripting
Technical Leadership
Troubleshooting

Visa sponsorship

Not detected in the job text

Keywords

Network Security
Cybersecurity Operations
Next-Generation Firewall
Wide-Area Network
Intrusion Detection System
Intrusion Prevention System
DDoS Protection
Virtual Private Network
Network Access Control
URL Filtering
DNS Security
TCP/IP
ICMP
TLS
HTTP/HTTPS
IPsec
BGP
OSPF
EIGRP
Incident Response
Threat Analysis
Root Cause Analysis
CISSP
CCNP Security
CCIE Security
PCNSA
PCNSE
Sarbanes-Oxley Act
Project Delivery Methodology
Windows

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