M365 Administrator

Apptoza Inc.; Calgary; On-site; CAD 110,000 - 160,000; Full time

Job summary

Apptoza Inc. is seeking a Senior Microsoft 365 & Exchange Administrator to manage and optimize enterprise Microsoft 365 and Exchange environments.

This role covers administration, migration, security, compliance, troubleshooting, and automation across Microsoft 365 services, Exchange Online, Entra ID, Teams, OneDrive, and hybrid messaging infrastructures. The successful candidate will lead complex migration, modernization, and operational initiatives in large-scale cloud environments, requiring

Qualifications

• 8+ years of Microsoft infrastructure administration experience.
• 5+ years of Microsoft 365 Administration experience.
• 5+ years of Exchange Online/Hybrid Exchange administration experience.
• Experience supporting enterprise environments with 5,000+ users.
• Strong troubleshooting and operational support experience.

Responsibilities

• Administer and optimize Microsoft 365 and Exchange environments.
• Lead migrations, hybrid deployments, and cloud modernization initiatives.
• Develop automation scripts with PowerShell and Graph API.
• Provide Tier-3 support and mentor junior staff.
• Ensure security, compliance, and governance across tenant.

Skills

Microsoft 365

Exchange Technologies

Automation

Monitoring & Reporting

Tools

Microsoft Graph API

Job description

"We are seeking a highly experienced Senior Microsoft 365 & Exchange Administrator to manage, support, and optimize enterprise Microsoft 365 and Exchange environments. The successful candidate will be responsible for administration, migration, security, compliance, troubleshooting, and automation across Microsoft 365 services, Exchange Online, Entra ID (Azure AD), Teams, OneDrive, and hybrid messaging infrastructures."

This role requires strong hands-on experience in enterprise-scale Microsoft cloud environments and the ability to lead complex migration, modernization, and operational initiatives.

Key Responsibilities

Microsoft 365 Administration

• Administer and support Microsoft 365 services including:
  • Exchange Online
  • Microsoft Teams
  • OneDrive for Business
• Manage tenant configuration, policies, licensing, subscriptions, and service health.
• Configure and maintain Conditional Access, MFA, SSO, and Identity Governance.
• Monitor Microsoft 365 services and proactively address performance and availability issues.
• Lead tenant assessments, migrations, modernization projects, and cloud transformation initiatives.

Exchange Administration

• Administer Exchange Online and Hybrid Exchange environments.
  • Shared Mailboxes
  • Resource Mailboxes
  • Distribution Lists
  • Microsoft 365 Groups
• Configure and manage:
  • Mail Flow Rules
  • Transport Rules
  • Mail Connectors
  • SPF, DKIM, and DMARC
  • Exchange Online Protection (EOP)
• Troubleshoot complex mail delivery, routing, authentication, and messaging issues.
• Support Exchange migrations from on-premises Exchange to Exchange Online.

Identity & Access Management

• Manage user provisioning and deprovisioning processes.
• Configure and support:
  • Conditional Access Policies
  • Single Sign-On (SSO)
  • Privileged Identity Management (PIM)
  • Identity Governance
• Integrate Microsoft 365 with enterprise applications and third-party identity providers.

Compliance & Governance

• Configure and maintain:
  • Litigation Hold
  • Compliance Center Controls
  • Mailbox Auditing
• Support legal, compliance, and audit requirements.
• Assist with governance, data retention, and records management initiatives.

Automation & Scripting

• Develop and maintain PowerShell automation scripts.
• Automate user provisioning, license management, mailbox administration, and operational reporting.
• Utilize Microsoft Graph API for advanced administration and reporting.

Operations & Support

• Provide Tier-3 escalation support for Microsoft 365 and Exchange services.
• Participate in incident, change, problem, and release management activities.
• Maintain operational documentation, standards, and support procedures.
• Mentor junior administrators and support staff.

Required Technical Skills

• Microsoft 365
• Exchange Technologies
• Automation
• Monitoring & Reporting

Required Experience

• 8+ years of Microsoft infrastructure administration experience.
• 5+ years of Microsoft 365 Administration experience.
• 5+ years of Exchange Online/Hybrid Exchange administration experience.
• Experience supporting enterprise environments with 5,000+ users.
• Experience with Exchange migrations and Microsoft 365 tenant migrations.
• Strong expertise in mail flow management, email security, and identity administration.
• Strong troubleshooting and operational support experience.

Preferred Certifications

• Microsoft Certified: Identity and Access Administrator Associate

Soft Skills

• Strong communication and stakeholder management skills.
• Ability to lead technical discussions and architecture reviews.
• Excellent analytical and problem-solving abilities.
• Ability to mentor junior administrators and lead technical initiatives.
• Experience working in large enterprise environments.