Exchange O365 Administrator

Our Company:

We re Hitachi Digital, a company at the forefront of digital transformation and the fastest growing division of Hitachi Group. We re crucial to the company s strategy and ambition to become a premier global player in the massive and fast-moving digital transformation market.

Role: Exchange/O365 Administrator
Location: Noida (Hybrid)

The role
Administer and manage Exchange Online services including mail flow, mailbox policies, hybrid configurations, and compliance features.
Perform mailbox provisioning, distribution group management, and user support across Exchange Online.
Monitor service health, performance, and availability using Microsoft Admin Center and PowerShell.
Maintain and optimize mail routing, transport rules, connectors, and spam filtering (EOP & Microsoft Defender for Office 365).
Implement and enforce security measures such as DKIM, DMARC, SPF, and encryption protocols.
Support and maintain Exchange Hybrid configurations with on-premises Exchange (if applicable).
Perform data retention configuration, archiving, legal holds, and compliance reporting in coordination with the compliance team.
Troubleshoot mail delivery issues, mailbox performance, and access problems across devices.
Collaborate with security and compliance teams to ensure adherence to policies and regulatory requirements.
Provide documentation, reporting, and end-user guidance as needed.

What you ll bring:
Bachelor s degree in Computer Science, Information Technology, or related field (or equivalent experience).
6-10 years of experience managing Exchange Online or Exchange Hybrid environments.
Strong experience with Microsoft 365 Admin Center and Exchange Online Admin Center.
Proficiency in PowerShell scripting for mailbox administration, reporting, and automation.
Familiarity with Microsoft Defender for Office 365, EOP, MFA, Conditional Access, and Azure AD.
Experience in managing compliance features like retention policies, eDiscovery, and auditing.
Knowledge of email routing protocols (SMTP, DNS, TLS), and security configurations (SPF, DKIM, DMARC).
Strong problem-solving and troubleshooting skills with a focus on end-user satisfaction.

Preferred Certifications (nice to have):
Microsoft Certified: Messaging Administrator Associate
Microsoft Certified: Microsoft 365 Fundamentals (MS-900)
Microsoft Certified: Security, Compliance, and Identity Fundamentals (SC-900)