Demo

L3 Microsoft 365 Engineer

Astreya Partners
Chicago, IL Full Time
POSTED ON 10/14/2026
AVAILABLE BEFORE 11/14/2026
Microsoft 365 Administration
Provide L3 support for Microsoft 365 services and act as the final escalation point for complex incidents.
Design, implement, and maintain Microsoft 365 solutions aligned with business requirements.
Perform tenant administration, health monitoring, and service optimization.
Exchange Online
Manage Exchange Online administration, mail flow, transport rules, connectors, and compliance policies.
Troubleshoot complex mailbox, calendaring, mail routing, and hybrid Exchange issues.
Support email migration and modernization initiatives.
Microsoft Teams
Administer Teams policies, governance, voice configurations, and collaboration services.
Troubleshoot Teams client, meeting, calling, and integration issues.
Support Teams adoption and optimization initiatives.
SharePoint Online
Manage SharePoint Online sites, permissions, storage, content management, and governance.
Troubleshoot site performance, access, search, and integration issues.
Support collaboration and document management solutions.
Microsoft Entra ID (Azure AD)
Administer user lifecycle management, groups, RBAC, Conditional Access, MFA, and Identity Governance.
Manage SSO, application integrations, and federation services.
Support identity security, access reviews, and compliance initiatives.
Security & Compliance
Implement and maintain Microsoft security best practices.
Support audits, compliance requirements, and security investigations.
Collaborate with cybersecurity teams to enhance tenant security posture.
Automation & Continuous Improvement
Develop automation scripts using PowerShell.
Create operational runbooks and knowledge articles.
Identify opportunities for service improvements and operational efficiencies.
Required Skills
Expert knowledge of Microsoft 365 administration.
Strong expertise in:
o Exchange Online
o Microsoft Teams
o SharePoint Online
o Microsoft Entra ID (Azure AD)
Experience with PowerShell scripting and automation.
Strong understanding of Microsoft 365 security and compliance features.
Experience with hybrid environments and identity synchronization.
Preferred Qualifications
Microsoft Certified: Enterprise Administrator Expert.
Microsoft Certified: Identity and Access Administrator Associate.
Microsoft Certified: Messaging Administrator Associate.
Experience with Intune, Purview, Defender, and Power Platform is desirable.
Key Competencies
Advanced troubleshooting and problem-solving skills.
Strong stakeholder communication and documentation skills.
Ability to lead major incident resolution and root-cause analysis.
Experience working in global 24x7 enterprise environments.

Salary.com Estimation for L3 Microsoft 365 Engineer in Chicago, IL
$91,649 to $116,384
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