M365 Admin
Listed on 2026-07-01
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IT/Tech
Cybersecurity, Systems Administrator, Information Security, M365, SharePoint & Power Platform
M365 Admin
Location:
North Quincy, MA Chicago, IL (Onsite)
FTE only
Job Description:
10+ years of M365 Administration and Security
Understanding of M365 security architecture and compliance frameworks.
Administer Exchange Online, Teams, SharePoint, One Drive, and M365 tenant settings.
Manage Entra (Azure AD) identities, MFA, Conditional Access, and role-based access.
Configure and support Defender for Office 365, Purview DLP, MCAS, and M365 security features.
Implement Zero Trust security controls and maintain secure score posture.
Handle M365 compliance: retention, sensitivity labels, data governance.
Automate admin tasks via Power Shell and generate platform/security reports.
Provide L3 support, troubleshoot issues, and collaborate with security teams.
Microsoft 365 Administration
Manage and administer Exchange Online, SharePoint Online, One Drive, Teams, and Power Platform.
Configure and support M365 groups, licenses, roles, and service settings.
Monitor service health, troubleshoot issues, and perform tenant maintenance.
Manage user and device lifecycle within Entra (Azure AD).
M365 Security & Compliance
Configure and maintain:
Defender for Office 365
Defender for Identity
Defender for Endpoint (optional depending on Intune scope)
Microsoft Purview (DLP, sensitivity labels, retention policies)
Cloud App Security / Defender for Cloud Apps (MCAS)
Conditional Access Policies
Implement Zero Trust principles across identity, data, and device access.
Conduct security monitoring, threat investigation, and remediation.
Maintain compliance posture and M365 Secure Score improvements.
Identity & Access Management (Entra )
Manage identity configuration, authentication policies, and MFA.
Administer Conditional Access, Privileged Identity Management (PIM), and role-based access controls.
Support hybrid identity (Entra Connect / Cloud Sync).
Intune / Endpoint Management (optional based on org scope)
Configure MDM/MAM policies.
Deploy and manage apps, compliance policies, security baselines.
Ensure secure device posture across Windows/macOS/iOS/Android.
Governance & Compliance
Implement M365 governance policies around:
SharePoint/Teams provisioning & lifecycle
External access & guest access management
Data retention, archival, and legal hold
Ensure alignment with corporate and regulatory compliance requirements.
Automation & Reporting
Use Power Shell, Graph API, or Power Automate for automation and bulk administration.
Generate reports on security posture, user activity, license usage, and compliance.
Collaboration & Support
Act as SME for M365 platform and security-related topics.
Collaborate with cybersecurity, infrastructure, and compliance teams.
Provide L3 support for M365 and security escalations.
Educate end-users and business units on best practices.
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