Senior Systems & Identity Administrator | M365 & Entra

Perseus Group, Constellation Software; Markham; On-site; CAD 90,000 - 110,000; Full time

Job summary

Constellation HomeBuilder Systems in Markham, Ontario, seeks a Senior Systems Administrator / M365 & Infrastructure Administrator to lead Microsoft Entra ID, 365 services, and endpoint management. You will partner with stakeholders and vendors to ensure secure, reliable IT services during ongoing integrations.

The role emphasizes IAM, security governance, SSO/CA, and licensing with a focus on collaboration platforms and cloud/hybrid infrastructure modernisation.

Qualifications

• 7+ years IT infrastructure and systems administration experience.
• 5+ years administering Microsoft 365 environments.
• Strong experience with Microsoft Entra ID.
• 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 & compliance initiatives.
• Strong troubleshooting, analytical, and problem-solving skills.
• Excellent written and verbal communication skills.

Responsibilities

• Administer and secure Microsoft Entra ID and lifecycle management.
• Manage Microsoft 365 services: Exchange Online, Teams, SharePoint Online, OneDrive, Power Platform, Power BI.
• Oversee endpoint management, Intune, Autopilot, device compliance.
• Maintain security governance, MFA, and licensing.
• Collaborate with leadership and vendors to ensure reliable services.
• Develop and maintain system documentation, procedures, and standards.
• Support migration and integration activities during IT consolidations.

Tools

Microsoft Entra ID

Microsoft 365

SSO & Conditional Access

Exchange Online

SharePoint Online

Teams

Intune

Windows Autopilot

Licensing & Governance

Cybersecurity & Compliance

Identity Governance

Power BI

Azure

Palo Alto Networks

Job description

Constellation HomeBuilder Systems in Markham, Ontario, seeks a Senior Systems Administrator / M365 & Infrastructure Administrator to lead Microsoft Entra ID, 365 services, and endpoint management. You will partner with stakeholders and vendors to ensure secure, reliable IT services during ongoing integrations.

The role emphasizes IAM, security governance, SSO/CA, and licensing with a focus on collaboration platforms and cloud/hybrid infrastructure modernisation.