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Network Security Jobs in Ontario (NOW HIRING)

Moneris

Senior Network Administrator

Toronto, ON · Hybrid

CA$106K - CA$135K/yr

You will have the opportunity to work across network security, cloud connectivity, automation, and infrastructure modernization initiatives that directly support critical business operations. This ...

Lancaster Bible College

The Network Manager serves as the College's primary network infrastructure professional, responsible for the operation, security, maintenance, and lifecycle management of the institution's wired and ...

Nextologies Limited

Be Seen First

L3 Network/ Linux Systems Engineer

Markham, ON · On-site

CA$90K - CA$105K/yr

In-depth knowledge on Routing, Switching and Network Security with the broad industry experience (OSPF, BGP, PIM) on Cisco; Brocade as a plus. · 3-5 years of experience with designing and ...

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Network Security information

What is network security?

Network security refers to the strategies, policies, and technologies used to protect computer networks from unauthorized access, misuse, or theft. It involves implementing measures such as firewalls, encryption, intrusion detection systems, and secure protocols to safeguard data and ensure the integrity, confidentiality, and availability of network resources. Network security is essential for organizations to prevent cyberattacks, data breaches, and other security threats that can disrupt operations or compromise sensitive information.

What are the key skills and qualifications needed to thrive as a network security professional?

To thrive as a Network Security professional, you need a solid understanding of network protocols, firewall management, vulnerability assessment, and typically a degree in computer science or a related field. Familiarity with security tools such as SIEM solutions, intrusion detection/prevention systems, and certifications like CISSP or CompTIA Security+ are often required. Strong analytical thinking, attention to detail, and effective communication help professionals anticipate threats and convey risks to stakeholders. These skills are crucial for protecting organizational data, ensuring compliance, and minimizing potential security breaches.

What are some common challenges faced by professionals in network security roles, and how can they be addressed?

Professionals in Network Security often encounter challenges such as staying updated with rapidly evolving cyber threats, managing complex security infrastructures, and ensuring compliance with industry regulations. To address these, ongoing professional development and training are essential, as is fostering strong collaboration with IT and other security teams. Utilizing automated security tools and regularly reviewing security policies can also help mitigate risks and streamline daily operations. Being proactive and adaptable is key to success in this dynamic field.

What is the difference between Network Security vs Cybersecurity Specialist?

AspectNetwork SecurityCybersecurity Specialist
CertificationsCompTIA Security+, Cisco CCNA SecurityCompTIA Security+, CISSP, CEH
Work EnvironmentFocus on network infrastructure, firewalls, VPNsBroader security measures, including networks, applications, and data
Employer & Industry UsageIT departments, network providers, enterprisesAll sectors, including finance, healthcare, government
Search & Comparison IntentSpecific to network protection rolesBroader security roles encompassing multiple domains

Network Security primarily concentrates on protecting network infrastructure, such as firewalls and VPNs, while Cybersecurity Specialists have a broader role, covering all aspects of digital security, including networks, applications, and data. Both roles require similar certifications but differ in scope and work environment, with Network Security focusing more on network-specific tasks and Cybersecurity Specialists handling comprehensive security strategies across an organization.

What do you do in network security?

A network security professional protects computer networks from cyber threats by implementing security measures such as firewalls, intrusion detection systems, and encryption. They monitor network traffic, analyze vulnerabilities, and respond to security incidents to ensure data integrity and confidentiality. Certifications like CISSP or CompTIA Security+ are often valuable in this field.

What is a network security job?

A network security job involves protecting computer networks from cyber threats, unauthorized access, and data breaches. Professionals in this field configure security tools like firewalls and intrusion detection systems, and often hold certifications such as CISSP or CompTIA Security+ to ensure network integrity and confidentiality.

What are the most commonly searched types of Network Security jobs in Ontario?

The most popular types of Network Security jobs in Ontario are:

What are popular job titles related to Network Security jobs in Ontario?

For Network Security jobs in Ontario, the most frequently searched job titles are:

What job categories do people searching Network Security jobs in Ontario look for?

The top searched job categories for Network Security jobs in Ontario are:

What cities in Ontario are hiring for Network Security jobs?

Cities in Ontario with the most Network Security job openings:

Network Security jobs near you
Infographic showing various Network Security job openings in Ontario as of August 2026, with employment types broken down into 78% Full Time, 19% Part Time, and 3% Contract. Highlights an 91% Physical, 2% Hybrid, and 7% Remote job distribution.

Senior OT Cybersecurity & Network Security Analyst

Atlantic Packaging Products

Scarborough, ON • On-site

Full-time

Medical, Dental, Vision

Re-posted 15 days ago

Job description

“Join us in building Careers and shaping Experiences Beyond the Box” 

About Us

At Atlantic Packaging, every box tells a story and yours begins here. As a proudly Canadian-owned company with over 80 years of excellence in the corrugated packaging industry with operations within North America (Ontario, Quebec and United States), we’re committed to sustainability, customer excellence and community impact. Since 1945, we’ve supported local jobs and built a legacy of trust with our clients and team members. At Atlantic, your ideas matter, your growth is supported and your work makes a real impact.

The Opportunity

We are looking for a Senior OT Cybersecurity & Network Security Analyst to help improve cybersecurity visibility, governance, and controls across our Operational Technology environments. This role will support discovery of OT assets and assessment of cyber risk in manufacturing OT environments across paper mills, corrugated plants, and warehouses.  

The successful candidate will work closely with Cybersecurity, Infrastructure, Network, Plant Operations, Engineering, Maintenance, and third-party vendors to discover OT assets, assess risks, document OT network connectivity, review vendor access, and recommend security improvements. 

This role will also support OT network security activities, including segmentation reviews, firewall and VPN access reviews, secure remote access, OT monitoring, and implementation of OT network visibility technologies such as Nozomi Networks or similar platforms. 

What You’ll Do

  • Discover and document OT networks, assets, systems, vendors, and connectivity paths. 
  • Build and maintain OT asset inventory, vendor access inventory, and OT network diagrams. 
  • Review OT network segmentation, firewall rules, VPN access, remote access, and vendor connectivity. 
  • Support implementation of OT network visibility and monitoring tools such as Nozomi, Claroty, Dragos, Microsoft Defender for IoT, or similar platforms. 
  • Assess cybersecurity risks across OT systems including Ewon, Moxa, DCS, PLCs, SCADA, sensors, engineering workstations, servers, and vendor-managed systems. 
  • Define OT security controls for remote access, vendor access, monitoring, logging, segmentation, access reviews, and incident response. 
  • Work with plant, engineering, infrastructure, network, cybersecurity, and vendor teams to improve OT security posture. =
  • Support OT cybersecurity reviews for plant projects, capital projects, automation initiatives, and vendor solutions. 
  • Create OT risk registers, remediation plans, exception records, dashboards, and executive-level reporting. 
  • Support OT incident response planning and coordination with Security Operations, Network, Plant Operations, Engineering, and vendors. 

What You Bring

  • Experience in cybersecurity, network security, infrastructure, OT security, industrial control systems, or manufacturing technology. 
  • Strong knowledge of networking concepts including firewalls, switches, routing, VLANs, VPN, segmentation, access control lists, logging, and monitoring. 
  • Familiarity with OT systems such as Ewon, Moxa, DCS, PLCs, SCADA, sensors, engineering workstations, HMI systems, historian systems, and industrial servers. 
  • Experience with vendor access governance, risk assessment, network security reviews, incident response, and security documentation. 
  • Ability to work with plant operations, engineering teams, vendors, cybersecurity teams, and infrastructure teams. 
  • Strong communication skills and ability to explain cybersecurity risks in simple business language.  

Preferred Qualifications

  • Experience with OT visibility and monitoring tools such as Nozomi Networks, Claroty, Dragos, Microsoft Defender for IoT, or similar platforms. 
  • Experience with passive OT monitoring, network taps, SPAN ports, OT sensors, asset discovery, vulnerability identification, and anomaly detection. 
  • Knowledge of NIST SP 800-82, ISA/IEC 62443, NIST Cybersecurity Framework, ISO 27001, or CISA cybersecurity guidance. 
  • Experience in manufacturing, industrial automation, paper mills, corrugated packaging, or process manufacturing environments. 
  • Certifications such as CISSP, CISM, CRISC, GICSP, GRID, ISA/IEC 62443, Fortinet, Cisco CCNA/CCNP, or similar certifications are considered an asset.  

What We Offer 

  • Comprehensive health, dental and vision coverage (dependents included)
  • Teamwork-focused culture with sustainability initiatives and social events
  • A culture of appreciation through a point-based recognition
  • Opportunities for advancement and internal movement
  • Education assistance for continuous skill development
  • Academic scholarships for employees’ children
  • Safety equipment and PPE support program
  • Retirement savings and wellness initiatives
  • Employee Assistance Program (EAP)

    Inclusion and Accessibility

    Atlantic Packaging is committed to fostering an inclusive, accessible and respectful environment for all candidates. If you require accommodation during the hiring process, please contact our Talent Acquisition team—we’re here to support you.

    We sincerely thank all applicants for their interest in joining Atlantic Packaging. While we appreciate the time and effort invested, only those selected for an interview will be contacted.

    Please Note:
    Candidates who are 18 years or older are required to complete a criminal and background check. Details will be provided through the application process.

    Hiring Range : $104,759 - $130,949 per year. A candidate’s experience and knowledge may be factored into the pay a candidate receives for this position. This posting is for an existing vacancy.  

    Apply