Enterprise network administration drives this Senior Network Administrator role at CGI, supporting routers, switches, firewalls, and resilient services across complex environments.
This senior position provides hands-on operational support for business-critical enterprise networks. You will monitor infrastructure, troubleshoot connectivity and performance issues, administer routing and security technologies, and maintain service documentation. The work supports production, test, and disaster recovery environments.
Key Responsibilities: Administer routers, switches, firewalls, load balancers, and network services
Monitor network health, capacity, utilization, availability, and performance
Resolve incidents, disruptions, connectivity issues, and performance problems
Implement controlled changes through established change management processes




Support lifecycle, security, automation, and modernization initiatives
Requirements: Five or more years in network administration or infrastructure support
Strong TCP/IP, routing, switching, VLAN, Layer 2, and Layer 3 knowledge
Knowledge of DNS, DHCP, and network security fundamentals
Production enterprise network support and complex troubleshooting experience
Solid analytical, problem-solving, written, and verbal communication skills
Apply enterprise networking expertise, disciplined troubleshooting, and security knowledge as CGI’s Senior Network Administrator supporting critical services.

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📌 Senior Network Administrator Enterprise Infrastructure (Alberta)
🏢 Canadian Tire Corporation
📍 Alberta