Senior System Engineer, MS 365

Role Overview

• 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
• 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
• 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
• Support audit requests and compliance assessments related to both collaboration data and AI usage
• Administer governance for Teams creation, external access, federation, and app permissions.
• 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

Requirements

• 3–7 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

Benefits

• Ralliant Corporation Overview
• We Are an Equal Opportunity Employer