Senior Network & Systems Specialist

Role overview

Responsibilities

• Operate, maintain, troubleshoot, and improve core and distribution networks and related systems.
• Own complex issues from investigation through resolution and documentation; configure network equipment, servers, firewalls, and monitoring platforms.
• Lead system builds, upgrades, migrations, deployments, and infrastructure improvement projects.
• Improve network stability, performance, visibility, security, and operating costs; assess inherited or incompletely documented systems.
• Maintain network diagrams, configuration records, procedures, standards, and troubleshooting documentation; create repeatable operational processes.
• Serve as the senior escalation point and primary on-call resource for network outages and service-affecting issues.
• Respond to outages at the downtown Toronto data centre and distribution sites in condominium buildings across the Greater Toronto Area.
• Attend network sites outside regular hours when issues cannot be resolved remotely; provide onsite escalation support for complex customer-location issues.
• Monitor alerts, review and audit operational and support tickets, plan priorities and maintenance, and communicate incidents, risks, and project progress to management.
• Guide, mentor, and train Technical Support and Field Services personnel; assist with complex work and inspect installations for compliance with company standards.
• Oversee networking equipment inventory and spare equipment; assist with difficult installations or service issues when required.

Required qualifications

• Significant hands-on experience operating and supporting ISP, telecommunications, carrier, or service-provider networks.
• Strong knowledge of routing, switching, BGP, IP addressing, VLANs, firewalls, DHCP, DNS, monitoring, and service-provider infrastructure.
• Experience configuring and troubleshooting Cisco routers and switches; Cisco ASR 1000 Series or comparable service-provider routing platforms.
• Strong Linux administration experience and practical experience with FreeRADIUS or another RADIUS/AAA platform.
• Production BGP configuration and troubleshooting experience.
• Experience with Zabbix, PRTG, or similar network monitoring and alerting platforms.
• Ability to work independently in a senior hands-on role and create technical documentation, procedures, standards, and network diagrams.
• Strong troubleshooting, analytical, organizational, prioritization, communication, and follow-up skills; ability to manage concurrent issues and projects.
• Willingness to respond to urgent after-hours issues when required.
• Valid Ontario Class G driver’s licence and ability to attend network and customer locations throughout the Greater Toronto Area.
• Ability to work full-time from the Mississauga office; this is not a remote position.
• English is required.

Preferred technical experience

• Experience with Cisco Catalyst, Small Business, or Nexus switches; Cisco ASR 1000 or ASR 9000 routers; PPPoE, L2TP, subscriber management, or ISP access networks is an asset.
• Experience with FreeRADIUS, subscriber authentication, ISC DHCP Server, Linux, Windows Server, FreeBSD, Zabbix, or PRTG is an asset.
• Experience with Sandvine ActiveLogic, Juniper NetScreen, 3CX, Asterisk, FreePBX, Ubiquiti EdgeRouters, switching or Wi-Fi, VoIP/SIP, fibre, Ethernet, or fixed-access deployments is an asset.
• Applicants are not expected to have worked with every listed platform.

Success profile

• Takes ownership of technical problems and works independently as the senior hands-on technical resource.
• Investigates unfamiliar systems, completes configurations and upgrades, anticipates service-impacting issues, and creates useful documentation and repeatable processes.
• Balances immediate operational demands with longer-term improvements, communicates clearly, and follows through on commitments.

Benefits

• Benefits include casual dress, company events, dental care, extended health care, onsite parking, paid time off, and vision care.

Compensation

• Pay is $80,000–$100,000 per year.

Workplace

• Full-time work from the Mississauga office; the role is not remote.
• Requires travel to network and customer locations across the Greater Toronto Area and attendance at sites outside regular business hours when needed.