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Senior M365 Support Engineer

Senior Microsoft 365 Support Engineer

About the Role

We are looking for an experienced Senior Microsoft 365 Support Engineer to join our 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

    • Microsoft Purview (Security & Compliance)

  • Strong experience with Microsoft Entra ID (Azure AD), including:

    • Conditional Access

    • MFA

    • Identity Governance

    • Authentication

    • Hybrid Identity

  • Advanced PowerShell scripting and Microsoft Graph automation.

  • Strong Power Platform administration experience:

    • Power Apps

    • Power Automate

    • 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 such as:

    • Message Trace

    • CQD / Call Analytics

    • Audit Logs

    • 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.

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