IT Senior System Engineer, MS 365

Location: Beaverton OR or Raleigh NC

Ralliant is seeking a Microsoft 365 Tenant Administrator is responsible for the secure operation governance and lifecycle management of Microsoft 365 Commercial and GCC High (GCCH) tenants with an expanded mandate to support and govern AI feature deployment including Microsoft 365 Copilot and related AI services.
This role ensures that AI capabilities are enabled responsibly aligned with regulatory requirements data protection standards and organizational risk tolerance. The administrator partners closely with Security Legal Compliance and Architecture teams to control where how and for whom AI services are available while maintaining operational excellence across identity collaboration workloads and compliance tooling.

Responsibilities
Tenant Administration & Core Operations (Commercial GCCH)
Administer Microsoft 365 tenants ensuring secure and stable operations
Monitor service health coordinate incident response and produce RCA documentation
Maintain tenant configuration baselines and ensure alignment across Commercial and GCCH environments where feasible
Identify opportunities to improve automation policy enforcement and visibility using PowerShell Microsoft Graph and M365 reporting tools
AI Deployment Enablement & Control
Support tenant-level deployment and configuration of Microsoft 365 AI capabilities
Implement and manage AI governance controls including: Feature enablement/disablement User and group-level access scoping workspace and app-level permissions that impact AI data access
Partner with Security Privacy and Legal teams to validate AI readiness of tenant configuration ensure AI features comply with data handling retention and regulatory policies
Track AI feature rollout status limitations and differences between Commercial and GCCH and communicate impact to stakeholders
Identity Access and Security Controls
Configure and maintain Conditional Access MFA authentication policies and device-based access controls
Enforce least privilege access using Entra ID RBAC PIM)
Manage admin role assignments and privileged workflows with auditability in mind

Ensure data is governed appropriately to support responsible AI usage
Support audit requests and compliance assessments related to both collaboration data and AI usage

Collaboration & App Governance
Administer governance for Teams creation external access federation and app permissions. SharePoint and OneDrive sharing storage and lifecycle controls
Oversee third-party and first-party app governance including App approvals blocked apps and OAuth app consent
Review and manage Teams apps add-ins and agents in alignment with AI governance standards

Skills & Experience
37 years experience administering Microsoft 365 in an enterprise environment
Hands-on experience supporting Commercial and/or GCC High tenants (GCCH strongly preferred)
Strong understanding of: Entra ID identity and access controls Exchange Teams SharePoint OneDrive administration Microsoft Purview fundamentals
Experience implementing or supporting Microsoft 365 Copilot or AI feature deployment at the tenant level

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