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IT Infrastructure & Security Specialist

📍 Location
markham
⏰ Job Type
Full-time
📅 Posted
May 28, 2026

About the Role

Overview

We are seeking an IT Infrastructure & Security Specialist to join our IT Operations team. This role combines cloud infrastructure management, cybersecurity operations, networking, and L1/L2 technical support .

The ideal candidate has strong experience managing Microsoft 365, Azure, AWS infrastructure, networking, and enterprise systems , while also supporting internal users and maintaining secure, reliable IT operations in a fast-growing organization. The role also plays an important part in maintaining Frontier’s security posture , including security tooling, monitoring, and internal security awareness initiatives.

Key Responsibilities

  • Infrastructure & Cloud Operations
  • Administer and maintain Microsoft 365 services including Entra ID (Azure AD), Exchange Online, SharePoint, endpoint management, and security configurations.
  • Support and ma...

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