About The Role

We're looking for a Senior Infrastructure Specialist to join a federal government engagement supporting a large-scale Microsoft 365 environment. You'll work as part of a virtual, multidisciplinary technical team providing senior-level administration, integration, and support across Microsoft 365, Azure, Microsoft Entra ID, on-premises Active Directory, and Exchange environments serving tens of thousands of users.

This is a great opportunity for a hands-on infrastructure expert who enjoys solving complex identity, messaging, and cloud/hybrid integration challenges in a mission-critical, security-conscious environment.

What you'll do

- Configure, administer, maintain, and support Microsoft 365, Azure, Microsoft Entra ID, Active Directory, Exchange, and related cloud, hybrid, and on-premises infrastructure services
- Configure and maintain integrations between Microsoft 365, Azure, identity, messaging, and on-premises systems
- Administer identity synchronization, authentication, role-based access control, and privileged access management
- Monitor availability, performance, security, and operational health of supported services
- Investigate, troubleshoot, and resolve incidents, service degradation, and integration issues
- Plan, test, document, and implement approved changes, upgrades, and migrations
- Assess recent Microsoft service capabilities and provide technical impact analysis and recommendations
- Identify infrastructure risks and configuration gaps, and recommend mitigations
- Support backup, recovery, and business-continuity/disaster-recovery activities
- Develop and maintain solution designs,



configuration records, operational procedures, and knowledge articles
- Provide technical advice and recommendations to stakeholders and participate in working groups and planning sessions
- Provide knowledge transfer and operational handover as needed

Required Qualifications

- Recognized post-secondary credential in computer science or a related field
- Minimum 5 years (within the last 7) administering and supporting enterprise Microsoft 365 and Microsoft Exchange environments at large scale, including at least 4 of: Exchange Online administration, Exchange Server administration, hybrid Exchange configuration, mail flow/transport configuration, identity/directory integration, email security configuration, messaging incident troubleshooting, and implementing Exchange/M365 service changes
- Minimum 3 years (within the last 5) configuring, administering, and troubleshooting Microsoft Azure infrastructure services, including at least 4 of: virtual networks/subnets, Network Security Groups, virtual machines, Azure Storage, private endpoints/Private Link, Azure Monitor/Log Analytics, Azure Policy, Conditional Access, Azure Backup/recovery, and RBAC
- Minimum 5 years (within the last 7)



administering Microsoft Entra ID and on-premises Active Directory in a hybrid identity environment, including Entra Connect/Cloud Sync, authentication and identity sync, RBAC, Conditional Access, and Privileged Identity Management (or equivalent just-in-time privileged access)
- Minimum 3 years (within the last 5) developing scripts or automation for Microsoft 365, Azure, Entra ID, Active Directory, or Exchange administration and reporting
- Demonstrated experience providing operational support for enterprise Microsoft infrastructure environments, including monitoring, incident resolution, change management, risk identification, and operational documentation
- At least 2 active Microsoft certifications from: Azure Administrator Associate, Microsoft 365 Administrator Expert, Identity and Access Administrator Associate, Azure Solutions Architect Expert, Cybersecurity Architect Expert, or Microsoft 365 Messaging Administrator Associate (or Microsoft-authorized successor certifications)
- Fluent English (advanced oral, comprehension, and written)
- Eligible to obtain and maintain a Government of Canada security clearance

Nice to have
- Experience with Microsoft Copilot/AI agents, Teams SDK, Teams Toolkit, Adaptive Cards, or Teams message extensions
- Prior experience supporting large public-sector or enterprise Microsoft environments

What we offer
- Competitive contract rate
- Meaningful work supporting critical national infrastructure
- Flexible remote/hybrid work arrangement
- Opportunity to work alongside experienced technical teams on complex, high-impact systems

📌 Senior Microsoft 365 / Exchange Infrastructure Specialist (Ottawa)
🏢 Insi
📍 Ottawa