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Senior Systems & Network Administrator (Windows, Linux, Cisco & F5)

@ CGI

Toronto, Ontario

Full-time
Apply now
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Overview

CGI is hiring a Senior Systems & Network Administrator for its Infrastructure & Operations team to administer, monitor and support enterprise Windows, Linux, virtualization, network, firewall and load balancing environments. The role keeps critical business systems available, reliable, secure and performing well while supporting projects and incident and change management. It is a full-time hands-on position in a fast-paced enterprise setting.

Responsibilities:

  • Administer and maintain Windows and Linux servers
  • Manage network, firewall and load balancing environments
  • Monitor systems to ensure availability and performance
  • Support incident, change and project work

Requirements summary:

  • Strong server administration expertise
  • Network infrastructure and Cisco experience
  • Virtualization technology knowledge
  • Experience with F5 and firewall technologies

Tools & skills

Source and dates

Source type not verified · njoyn

Employer posting date
2026-10-05
First seen by our source
2026-10-17
Source record updated
2026-10-17

These dates describe the source record, not a live verification that the employer is still hiring. Check the original posting.

Job details

SenioritySenior
DepartmentIT
Hours per week40 (estimated)
Travelair: none · ground: none
Work settingOffice, Client sites
PositionMostly sitting
Physical demandsphysical low · computer high

Summary and details written by AI from the posting; the employer’s posting is the authority.

FieldValue
Company size10001+
HeadquartersE-Commerce Place
Open jobs on Jobsy514
Job description
Position Summary
We are seeking a highly skilled Senior Systems & Network Administrator to join our Infrastructure & Operations team. This role is responsible for the administration, maintenance, monitoring, and support of enterprise Windows, Linux, virtualization, network, firewall, and load balancing environments.
The successful candidate will possess strong technical expertise in server administration, network infrastructure, virtualization technologies, and operational support processes. This individual will play a key role in ensuring the availability, reliability, security, and performance of critical business systems while supporting projects, incident management, change management, and continuous improvement initiatives.
This position requires a hands-on infrastructure professional capable of supporting server, network, and security technologies in a fast-paced enterprise environment.
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