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
- Robust 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
- Strong 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.

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