Senior OT Cybersecurity & Network Security Analyst

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.

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.

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.