Senior M365 Support Engineer

About the Role

We are looking for an experienced Senior Microsoft 365 Support Engineer to join an enterprise IT team. This is a senior, hands-on role focused on resolving complex Microsoft 365 platform issues, driving automation, strengthening security and governance, and supporting continuous platform improvements across a global environment.

Beyond day-to-day support, you will lead Root Cause Analysis (RCA), implement long-term improvements, mentor junior engineers, and work closely with architects and service owners on strategic platform initiatives.

Key Responsibilities

Microsoft 365 Platform

• Lead complex troubleshooting and Root Cause Analysis (RCA) across Exchange Online, SharePoint Online, OneDrive, and Microsoft Teams.
• Deliver permanent fixes for recurring platform issues and drive operational improvements.
• Design, implement, and maintain enterprise governance, security, and compliance standards.
• Develop advanced PowerShell and Microsoft Graph automation for large-scale administration, reporting, and operational efficiency.
• Manage Microsoft 365 Security & Compliance solutions, including:
  • Microsoft Purview
  • Conditional Access
  • Data Loss Prevention (DLP)
  • Retention Policies
  • Sensitivity Labels
• Architect and implement platform enhancements across Microsoft 365 services.
• Collaborate with architects and service owners on solution design and platform strategy.
• Mentor L1/L2 engineers through documentation, knowledge sharing, and technical coaching.

Power Platform

• Troubleshoot complex Power Automate workflows, custom connectors, and integration issues.
• Resolve Dataverse security, schema, capacity, and environment-related challenges.
• Optimize Power Apps for performance, governance, and security.
• Support Center of Excellence (CoE) initiatives, ALM processes, and DLP implementation.
• Improve platform reliability through automation, monitoring, and operational best practices.

Requirements

• 4–6+ years of hands-on enterprise Microsoft 365 administration experience.
• Expert knowledge of Exchange Online, SharePoint Online, Microsoft Teams, OneDrive, and Microsoft Purview (Security & Compliance).
• Strong experience with Microsoft Entra ID (Azure AD), including Conditional Access, MFA, Identity Governance, Authentication, and Hybrid Identity.
• Advanced PowerShell scripting and Microsoft Graph automation.
• Strong Power Platform administration experience with Power Apps, Power Automate, and Dataverse.
• Experience leading Root Cause Analysis (RCA) and implementing long-term platform improvements.
• Strong understanding of Microsoft 365 governance, security, compliance, and tenant architecture.
• Experience with monitoring and diagnostics tools, including Message Trace, CQD / Call Analytics, Audit Logs, and Sign-in Logs.
• Experience mentoring junior engineers and driving operational excellence.
• Experience working in enterprise environments with 24/7 rotational support.

Nice to Have

• Experience designing enterprise Microsoft 365 platform architecture.
• Microsoft certifications: MS-102, AZ-104, SC-300, SC-400, or similar.
• Experience with automation-first operational models.
• Knowledge of ITIL processes and service management.

What We're Looking For

• Strong troubleshooting and analytical mindset.
• Ability to solve complex cross-service Microsoft 365 issues.
• Excellent communication and stakeholder management skills.
• Passion for automation, operational excellence, and mentoring others.
• Ownership mentality with a focus on continuous improvement and platform reliability.