Network Administrator

Location & Work Arrangement

• Scarborough, ON
• Hybrid work model

Salary : 110-114,700/- annually

We are seeking a Network Administrator (P4) to support the operation, maintenance, monitoring, and troubleshooting of enterprise network infrastructure. This role works closely with network engineering, infrastructure, and security teams to ensure network services remain secure, available, and aligned with business requirements.

Key Responsibilities

Network Operations & Support

• Monitor network infrastructure and respond to alerts, connectivity issues, and service disruptions, including after-hours support as required.
• Troubleshoot network connectivity, performance, and access-related issues.
• Provide Level 2 support for network incidents escalated from the Service Desk.
• Support the administration of switches, routers, firewalls, wireless infrastructure, and related network devices.
• Perform routine maintenance and health checks on networking equipment.
• Assist with network configuration changes following established procedures and change management processes.

Maintenance & Lifecycle Management

• Support patching, upgrades, and maintenance of network infrastructure.
• Assist with hardware installations, replacements, and decommissioning activities.
• Maintain network documentation, including diagrams, inventories, device configurations, and operational procedures.
• Identify network devices approaching end-of-life and support replacement planning.
• Follow established standards for network configuration, security, and change management.

Incident & Change Management

• Investigate and resolve network incidents within defined service levels.
• Escalate complex or high-risk issues to senior technical teams as required.
• Participate in scheduled maintenance, change implementation, and support activities.
• Document troubleshooting activities, resolutions, and configuration changes.
• Support on-call and after-hours activities when required.

Projects & Infrastructure Enhancements

• Assist with network infrastructure deployments and improvement initiatives.
• Support office moves, equipment installations, technology refreshes, and upgrades.
• Participate in testing and validation of network changes.
• Contribute to network reliability, performance, and operational process improvements.
• Participate in architecture reviews and solution assessments.
• Develop technical knowledge through training, certifications, and hands-on experience.

Required Qualifications

• University degree or college diploma in Computer Science, Information Systems, Networking, or a related discipline, or equivalent experience.
• 3-5 years of experience supporting enterprise network infrastructure.
• CCNA certification.
• Experience with Cisco routing and switching technologies.
• Experience supporting enterprise wireless networking environments.
• Knowledge of routing, switching, IP addressing, DHCP, DNS, and OSI model concepts.
• Experience with network monitoring and management tools.
• Understanding of firewall technologies and network security concepts.
• Knowledge of Microsoft infrastructure services including Active Directory, DHCP, and DNS.
• Experience installing and troubleshooting enterprise routers, switches, load balancers, and network access control solutions (ISE).
• Familiarity with ITIL practices and structured change management processes.
• Proficiency with Microsoft Office applications, including Visio and Project.

Preferred Qualifications

• Experience with Fortinet security technologies.
• Knowledge of ServiceNow or similar IT service management platforms.
• Experience working with third-party service providers and cross-functional IT teams.

Skills & Competencies

• Strong analytical and problem-solving skills.
• Ability to manage multiple priorities and deadlines.
• Effective documentation and organizational skills.
• Strong verbal and written communication skills.
• Ability to explain technical concepts to technical and non-technical stakeholders.
• Ability to work independently and collaboratively within a team environment.

If you meet the qualifications and are interested in supporting enterprise network operations and infrastructure initiatives, we encourage you to apply.