Senior M365 & Identity Security Architect

Linuxassociation; Markham; On-site; CAD 90,000 - 110,000; Full time

Job summary

Perseus Group, a part of Constellation Software, seeks a Senior Systems Administrator to manage M365 and infrastructure in Markham. You will oversee Entra ID, SSO, MFA, and licensing, while coordinating with IT leadership and vendors to ensure secure, scalable services.

The role emphasizes identity management, endpoint security, and collaboration platforms across the organization, with a focus on governance and reliability.

Qualifications

• 7+ years of IT infrastructure and systems administration experience.
• 5+ years administering Microsoft 365 environments.
• "Experience implementing and supporting SSO and Conditional Access."
• "Experience with Exchange Online, SharePoint Online, and Teams."
• "Experience administering Microsoft Intune and Windows Autopilot."
• "Strong understanding of Microsoft licensing and tenant governance."
• "Experience supporting cybersecurity and compliance initiatives."
• "Strong troubleshooting, analytical, and problem-solving skills."

Responsibilities

• Administer and maintain Microsoft Entra ID and user provisioning.
• Configure and manage SSO integrations and Conditional Access policies.
• Oversee Microsoft 365 services including Exchange Online, Teams, SharePoint Online, OneDrive, Power Platform, Power BI.
• Manage retention, compliance policies, mail flow, SPF/DKIM/DMARC and security controls.
• Administer Microsoft Intune and Windows Autopilot deployments.
• Support endpoint management, device compliance, patching, and remote workforce tech.
• Administer Teams Phone and collaboration services.
• Contribute to disaster recovery and security governance initiatives.

Skills

Entra ID

SSO

MFA

Microsoft 365

Intune

Windows Autopilot

Security governance

IT infrastructure

Identity governance

Troubleshooting

Tools

Exchange Online

SharePoint Online

Teams

Power Platform

Power BI

Intune

Job description

Perseus Group, a part of Constellation Software, seeks a Senior Systems Administrator to manage M365 and infrastructure in Markham. You will oversee Entra ID, SSO, MFA, and licensing, while coordinating with IT leadership and vendors to ensure secure, scalable services.

The role emphasizes identity management, endpoint security, and collaboration platforms across the organization, with a focus on governance and reliability.