Senior IT support Technician

Location: Saint-Laurent, QC (On-site) | Type: Full-Time Reports To: IT Infrastructure & Operations Manager

About the Role

We are seeking an experienced Systems & Network Administrator to own and maintain our Azure, Microsoft 365, networking, and security environments. This hands-on Level 3 role is the senior technical escalation point for complex infrastructure issues, keeping business-critical systems secure, reliable, and well-documented, in close collaboration with the Level 1 and Level 2 team.

Key Responsibilities

Azure & Microsoft 365

Administer Microsoft 365 andazure, including Entra ID, Conditional Access, MFA, Exchange, SharePoint, and Teams.

Manage cloud governance, licensing, identity, and security policies; monitor health and performance.

Networking

Administer routing, switching, wireless, VPNs, firewalls, and the UniFi ecosystem.

Monitor performance and capacity; troubleshoot complex connectivity issues.

Security & Compliance

Perform vulnerability remediation, patch management, endpoint protection, and infrastructure hardening.

Manage access controls and identity protection; support audits and incident response.

Infrastructure & Recovery

Administer Windows Server, Linux, VMware, and Hyper-V;maintainstorage and business-critical systems.

Manage backup, recovery, and disaster recovery; perform periodic recovery testing.

Automation & Documentation

Develop PowerShell automation to improve efficiency and reduce manual work.

Maintain SOPs, runbooks, network diagrams, and technical documentation.

Technical Environment

Microsoft 365 & Azure · Entra ID · Windows Server & Linux · VMware & Hyper-V · UniFi · Firewalls & VPNs · Endpoint Security · Backup & DR · PowerShell · ERP Systems

Required Qualifications

3–5 years in Systems, Network, or Infrastructure Administration.

Strong Microsoft 365 and Azure administration experience.

Solid networking (routing, switching, wireless, VPNs, firewalls).

Hands-on security and identity management experience.

Windows Server, Linux, VMware, and Hyper-V.

PowerShell scripting and automation.

Strong troubleshooting and problem-solving skills.

Certifications (Assets)

AZ-104 · Microsoft 365 Administrator · CompTIA Security+ · CCNA/CCNP · Veeam VMCE.

Core Principle

If it is not documented, it does not exist. All significant changes, configurations, incidents, and recovery procedures must be documented to ensure continuity and knowledge sharing.