Senior Network Analyst

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Job Title:

Senior Network Analyst | S.i. Systems | Toronto, ON
🏢 Recruiting Company: S.i. Systems
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Job Location:

Toronto, Ontario (100% Onsite)
💼 Job Type: 6‑Month Contract + Possible Extension
📧 Application Method:
Send resume to

S.i. Systems is seeking a highly experienced Senior Network Analyst to support and optimize complex enterprise network environments. This role is crucial in maintaining high availability, enhancing network performance, and supporting critical routing, firewall, and cloud‑networking operations onsite in Toronto.

As a Senior Network Analyst, you will work in a fast‑paced enterprise setting, providing advanced support across both cloud and on‑premise network infrastructures. You will manage and troubleshoot complex routing configurations, optimize Cisco L2/L3 environments, and support Azure networking, including Express Route connectivity. The role also involves administering Checkpoint firewalls, enhancing Zero Trust Network Access (ZTNA) posture, and ensuring robust network security.

You’ll collaborate closely with cross‑functional teams, lead issue resolution, and contribute to continuous improvement across the organization’s network landscape.

• Support, troubleshoot, and optimize complex enterprise network infrastructures
• Configure and manage advanced routing protocols: EIGRP, BGP, OSPF
• Maintain and optimize Cisco L2/L3 switching and routing environments
• Support Azure networking, including Express Route setup and troubleshooting
• Administer, configure, and optimize Checkpoint Firewalls
• Strengthen Zero Trust Network Access (ZTNA) controls and architectures
• Ensure high availability and resiliency across network services
• Collaborate with infrastructure, cloud, and security teams for end‑to‑end issue resolution

• 7+ years of experience supporting enterprise‑grade network infrastructures
• Strong hands‑on experience with advanced routing protocols (EIGRP, BGP, OSPF)
• 5+ years working with Cisco L2/L3 devices
• Experience with Azure networking and Express Route
• Proficiency with Checkpoint firewall products
• Strong knowledge of ZTNA architectures and network security principles
• Proven ability to troubleshoot and optimize high‑availability environments
• Excellent communication and cross‑team collaboration skills

• Experience in large, hybrid cloud enterprise networks
• Familiarity with SD‑WAN or SASE solutions
• Knowledge of automation tools such as Ansible or Python
• Exposure to incident, change, and problem management best practices

Showcase real-world scenarios where you resolved complex routing or firewall issues—especially involving Cisco, Azure Express Route, or Checkpoint—since these examples clearly demonstrate your readiness for a senior‑level, onsite enterprise role.