Senior M365 Engineer: Cross-Tenant Migrations & Governance

Atlas Search

New York (NY)

On-site

USD 120,000 - 160,000

Full time

6 days ago

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Job summary

Atlas Search in New York is seeking a Senior Systems Engineer to own the Microsoft 365 platform across a multi-tenant environment. You will blend day-to-day M365 operations with leading cross-tenant migration and integration programs arising from acquisitions and divestitures.

You will manage Exchange Online, SharePoint Online, Teams, and OneDrive governance at scale, administer Entra ID and Power Platform, and apply AI-driven automation to reduce toil while ensuring security and compliance.

Qualifications

5+ years in Microsoft 365 / enterprise systems engineering at scale.
Hands-on experience delivering cross-tenant migrations tied to acquisitions/divestitures.
Strong Entra ID and Power Platform administration skills.
Familiarity with email security standards (DMARC/SPF/DKIM) and ITSM/change management.
Interest in applying AI and automation to reduce operational toil.

Responsibilities

Lead M365 workstreams arising from acquisitions, mergers, and divestitures.
Plan and execute cross-tenant migrations: mailboxes, Teams, SharePoint/OneDrive, licensing.
Manage multi-tenant org (MTO) configuration: cross-tenant sync, shared address book, Teams Connect.
Own Exchange Online, SharePoint Online, Teams, and OneDrive governance at enterprise scale.
Administer Entra ID (Azure AD) and Power Platform environments, including app registrations and service principals.
Handle eDiscovery, compliance, and email security operations.
Triage M365 incidents and manage Windows server/virtualization infrastructure.