Tier 2 Infrastructure & Network Engineer - St. Albert, AB

Core Network Solutions Inc. is a Canadian managed IT services and network infrastructure company with more than 23 years of operation, serving over 150 clients across Western Canada from our head office in St. Albert, Alberta and our regional office in Prince George, British Columbia. We design, deploy and manage network, security and infrastructure environments for municipalities, health authorities and private-sector organizations - clients who expect their infrastructure to simply work, and who count on us when it doesn't.

We are looking for a Tier 2 Infrastructure & Network Engineer to take a lead role in the design, deployment and ongoing operation of client network, virtualization and security environments. This is a hands-on senior role: you will own project delivery from design through cutover, act as the top escalation point for complex technical issues, and travel to client sites across Western Canada to deliver network implementations.

The successful candidate is a broad, senior generalist — strong in enterprise networking, comfortable at a Linux command line, fluent in containerized and virtualized workloads, and confident configuring next-generation firewalls and web application firewalls.

• Design, configure and deploy enterprise LAN, WAN, SD-WAN and wireless environments for client sites, including switching, routing, VLAN architecture and QoS.
• Lead network implementation projects end to end: requirements gathering, design documentation, bill of materials, staging and configuration, on-site installation, cutover and post-deployment validation.
• Configure and maintain routing and switching platforms across CORE's core vendor lines, including Fortinet, Juniper, HPE, Arista and Check Point.
• Plan and execute network migrations and refreshes with minimal client disruption, including after-hours cutover windows.
• Implement and troubleshoot site-to-site and remote access VPN, including IPsec, IKEv2 and SSL VPN.
• Produce and maintain accurate network documentation: topology diagrams, IP schemas, configuration standards and as-built records.
• Deploy, harden, patch and administer Linux servers (Debian/Ubuntu and RHEL-family) in client and internal environments.
• Manage core Linux services including DNS, DHCP, NTP, SSH, web and reverse-proxy services, certificate management and log forwarding.
• Write and maintain shell scripts and lightweight automation to standardize repetitive administrative tasks.
• Perform Linux-level performance analysis and root cause investigation using standard diagnostic tooling.
• Apply security hardening baselines, manage user and privilege models, and support client audit and compliance requirements.

• Deploy, configure and maintain Docker hosts and containerized workloads supporting client and internal services.
• Build and maintain container images, Docker Compose stacks, persistent storage and container networking.
• Monitor container health, resource consumption and logging; manage lifecycle, updates and image hygiene.
• Apply container security practices including image provenance, least-privilege runtime configuration and registry management.

• Deploy, configure and manage next-generation firewalls, including policy design, application control, IPS/IDS, URL filtering, TLS inspection and threat prevention profiles.
• Deploy and tune web application firewalls, including rule sets, policy exceptions, false-positive tuning and protection of published client applications.
• Implement network segmentation and zero-trust-aligned access policies across client environments.
• Support CORE's CNSsecure security offerings and integrate deployed controls with client monitoring and reporting.
• Investigate security events, analyze firewall and system logs, and produce clear post-incident findings for clients.
• Stay current with emerging threats, vendor advisories and firmware and security patching cycles across managed platforms.
• Design, deploy and manage virtualization platforms including Proxmox VE, Microsoft Hyper-V and Morpheus.
• Build and maintain clustered hypervisor environments including shared storage, high availability and live migration.
• Manage virtual machine lifecycle: provisioning, templating, resource allocation, snapshots and capacity planning.
• Configure virtual networking, distributed switching and hypervisor-level segmentation.
• Integrate virtualization platforms with backup and recovery tooling, and regularly validate restore…