L3 O365 Engineer - Admin Center & Exchange Admin Console

Job Summary :

We are seeking an experienced and technically skilled L3 O365 Engineer to lead escalated support, advanced troubleshooting, and architectural enhancement for Microsoft 365 services. The candidate will function as a subject-matter expert across Exchange Online, OneDrive, SharePoint Online, and Microsoft Teamsdriving stability, performance, and user experience in a secure cloud-first environment.

Key Responsibilities :

- Troubleshoot and resolve issues related to Exchange Online, including mailbox access, email delivery failures, and transport rules

- Support OneDrive for Business : sync issues, access permissions, data recovery, and sharing configurations

- Manage SharePoint Online site access, permissions, library errors, and integration with Microsoft Teams

- Provide assistance with Microsoft Teams : meeting scheduling, chat synchronization, call quality, and app integrations

- Collaborate with L1 support teams to escalate unresolved incidents and ensure timely ticket resolution

- Assist in O365 license provisioning, group assignments, and mailbox migrations

- Maintain documentation for troubleshooting guides, user FAQs, and platform updates

- Perform periodic health checks across O365 services and generate usage reports

- Ensure adherence to IT security and compliance standards during user provisioning and collaboration setups

- Participate in knowledge-sharing sessions to train junior support staff

- Own the resolution of high-complexity incidents across Exchange, SharePoint, Teams, and OneDrive

- Design, implement, and optimize configurations and policies in Microsoft 365 Admin Center, Exchange Admin Console, and Security & Compliance Center

- Manage user provisioning, mailbox migrations, retention policies, and mail flow rules

- Administer SharePoint Online architecture : sites, libraries, metadata, and access controls

- Oversee OneDrive performance, data recovery, quota management, and cross-platform sync

- Troubleshoot Teams collaboration issues, meeting integrations, governance policies, and guest access scenarios

- Collaborate with stakeholders on M365 roadmap planning, licensing strategy, and cost optimization

- Develop automation scripts (PowerShell) for reporting, user management, and policy enforcement

- Work closely with InfoSec and IAM teams to ensure compliance, data protection, and security posture

- Mentor L1/L2 engineers through technical trainings and onboarding resources

- Author and maintain technical documentation, SOPs, KB articles, and RCA reports

Required Skills :

- Hands-on experience with Microsoft 365 Admin Center and Exchange Admin Console

- Proficiency in handling O365 core services from a support and configuration standpoint

- Strong communication and troubleshooting skills for hybrid and cloud environments

- Ability to interpret logs and error messages to identify root causes across O365 tools

- Familiarity with basic PowerShell for O365 administration and reporting (bonus)

- Customer-focused with the ability to manage and prioritize multiple tasks

- Advanced technical knowledge of Microsoft 365 ecosystem

- Proficiency in PowerShell scripting for M365 automation and diagnostics

- Deep understanding of hybrid environments, federation, and identity models

- Solid troubleshooting capabilities across cloud and endpoint integration

- Strong interpersonal and cross-team communication skills

- Ability to work independently on strategic technical initiatives