Exchange Administrator

Job Title : Exchange OnPrem + Online Administrator L3

Experience : 8-12 Years

About the Role :

RS Group PLC is seeking a highly skilled Exchange Administrator (L3) to manage, maintain, and optimize our hybrid Microsoft Exchange environment (On-Premises + Online/Office 365). The ideal candidate will have extensive experience in Exchange architecture, hybrid configurations, migrations, automation, and end-to-end operational support.

Key Responsibilities :

- Manage, monitor, and maintain Microsoft Exchange On-Premises environments (2013/2016/2019).

- Administer and optimize Exchange Online (Office 365), including mailboxes, policies, and security settings.

- Support, troubleshoot, and maintain hybrid configuration between Exchange On-Prem and Exchange Online.

- Perform mailbox provisioning, de-provisioning, migrations (cutover, staged, hybrid).

- Troubleshoot and resolve mail flow issues, email delivery failures, and mailbox performance challenges.

- Manage mobile device access and ActiveSync-related configurations.

- Implement, configure, and maintain email security solutions (anti-spam, anti-phishing, DLP policies).

- Use PowerShell scripting for automation, reporting, and administrative efficiency.

- Coordinate with Microsoft support for escalations and advanced troubleshooting.

- Maintain accurate technical documentation, SOPs, and configuration details.

- Ensure compliance with organizational email policies, regulatory frameworks, and industry standards.

- Contribute to capacity planning, system upgrades, and Exchange roadmap initiatives.

Required Skills & Qualifications :

- 8 - 12 years of hands-on experience with Exchange On-Premises (2013/2016/2019) and Exchange Online (Office 365).

- Strong knowledge of hybrid Exchange configurations and migration methodologies.

- Expertise in troubleshooting mail flow, SMTP, DNS, connectors, and message tracking.

- Proficiency in PowerShell scripting for automation and reporting.

- Experience implementing email security, compliance, and data loss prevention (DLP).

- Familiarity with Microsoft 365 security and compliance center.

- Strong understanding of Active Directory, DNS, and authentication mechanisms.

- Experience with third-party email gateways and security solutions (e.g., Proofpoint, Mimecast, Cisco ESA) is a plus.

- Excellent problem-solving, analytical, and communication skills.

- Ability to manage complex escalations at L3 support level.

- Relevant certifications (e.g., Microsoft 365 Certified : Messaging Administrator Associate, MCSE) preferred.