Senior OT Cybersecurity & Network Security Analyst

Atlantic Packaging Products Ltd.•Toronto, ON

1d•CA$104,759 - CA$130,949

About The Position

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.

Requirements

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.

Nice To Haves

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.

Responsibilities

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.