Senior Microsoft 365 / Exchange Infrastructure Specialist

Insi; Ottawa; Hybrid; CAD 120,000 - 150,000; Full time

Benefits offered by this job

Flexible remote/hybrid work

Public-sector exposure

Job summary

Insi is seeking a Senior Infrastructure Specialist to support a federal government engagement focused on a large-scale Microsoft 365 environment. You will work with a virtual, multidisciplinary team delivering senior‑level administration, integration, and support across M365, Azure, Entra ID, AD, and Exchange for tens of thousands of users.

This hands‑on role emphasizes solving identity, messaging, and cloud/hybrid integration challenges in a security‑conscious environment, with flexible

Qualifications

• Recognized post‑secondary credential in computer science or a related field.

Responsibilities

• Configure, administer, maintain, and support Microsoft 365, Azure, Entra ID, Active Directory, Exchange, and related cloud, hybrid, and on‑premises infrastructure services.
• Plan, test, document, and implement approved changes, upgrades, and migrations.
• Investigate, troubleshoot, and resolve incidents, service degradation, and integration issues.
• Provide technical advice and recommendations to stakeholders and participate in working groups and planning sessions.

Skills

Microsoft 365

Exchange

Azure

Entra ID

Active Directory

RBAC

Privileged Access Management

Scripting

Education

Post-secondary credential in Computer Science or related field

Tools

Azure Monitor/Log Analytics

Conditional Access

RBAC/Identity Governance

M365 Admin Center

Job description

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.

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 new 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