IT Infrastructure & Security Specialist

markham, york region, Canada • Posted June 05, 2026

Job Type: Full-time
Location: markham, york region
Posted: June 05, 2026
Category: Other-General
Application Deadline: July 15, 2026

Role Description

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 maintain Azure and AWS clou...

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