M365 Infrastructure Specialist

Location – Chennai

Exp – 10+years

Shift timings – 24

Work Mode – Hybrid (Tue and Wed)

Job Description –

The Office 365 (M365) Level 3 Support Engineer will provide advanced technical support, administration, and troubleshooting across Microsoft 365 services. The role involves handling complex escalations, driving root cause analysis, managing tenant configurations, and ensuring high availability and compliance across Exchange Online, SharePoint, Teams, and related workloads.

This position requires hands-on expertise with Microsoft Entra ID (Azure AD), hybrid identity, and security controls, along with a strong ability to document, automate, and optimize M365 operations in a managed services environment.

Key Responsibilities

• Manage, administer, and support Microsoft 365 core services – Exchange Online, SharePoint Online, Teams, and OneDrive for Business.
• Perform advanced troubleshooting and root cause analysis for issues across M365 workloads, including hybrid environments.
• Configure and manage Microsoft Entra ID (Azure AD), including Conditional Access, MFA policies, and hybrid identity integrations.
• Oversee license management, service health monitoring, and incident escalations in multi-tenant environments.
• Collaborate with cross-functional teams (Security, Cloud Ops, Endpoints) for incident resolution and service improvements.
• Create and maintain SOPs, KB articles, and technical documentation to ensure consistent service delivery.
• Provide technical guidance and mentorship to L1 / L2 engineers on complex O365 issues.
• Engage with Microsoft Support for escalation and resolution of critical incidents.

Core Technical Expertise Required