Systems Engineer; Exchange

Job Title:

Systems Engineer

Reporting to:
Lead Systems Engineer

Position Type:
Permanent, 35 hours per week

Hybrid

Overview:

Why Tokio Marine HCC?

Standing still is not an option in the current world of Insurance. TMHCC are one of the world’s leading Specialty Insurers. With deep expertise in our chosen lines of business, our unparalleled track record and a solid balance sheet, TMHCC evaluates and manages risk like no one else in the industry. Looking beyond profit, empowering our people and delivering on our commitments are at the core of our customer values, and so is a desire to grow and provide creative and innovative solutions to our clients.

Job Purpose:

The Infrastructure Collaboration Engineering team is looking to hire a technical person with expertise in M365, with a focus on Exchange, One Drive, Teams and Entra  this role, you will work as a technical lead and subject matter expert in designing, architecting, implementing, operating, and maintaining access management solutions using M365 and Entra .

Key Responsibilities:

Exchange

• Design, implement, and configure Exchange Online environments, including mailbox setup, migration from on‑premises Exchange, and hybrid configurations.
• Manage user mailboxes, distribution groups, shared mailboxes, and resource mailboxes. Perform day‑to‑day administration using the Microsoft 365 admin center and Power Shell.
• Implement and manage security features such as anti‑phishing, anti‑spam, and malware protection. Ensure compliance with organizational policies and regulatory requirements using features like retention policies, eDiscovery, and data loss prevention (DLP).
• Monitor Exchange Online health and performance using tools like Microsoft 365 Service Health and Message Trace. Troubleshoot mail flow issues, connectivity problems, and resolve service incidents.
• Provide technical support to end‑users for Exchange Online‑related issues, including mailbox access, email delivery, and calendar synchronization. Educate users on best practices and new features.
• Plan and execute mailbox migrations from legacy systems (such as Exchange Server or other email platforms) to Exchange Online, ensuring minimal disruption and data integrity.
• Integrate Exchange Online with other Microsoft 365 services (such as Teams, SharePoint, and One Drive) and third‑party applications as required.
• Utilize Power Shell and other automation tools to streamline administrative tasks, generate reports, and enforce organizational policies.
• Stay updated with the latest Exchange Online features, best practices, and Microsoft roadmap changes. Proactively recommend and implement improvements to enhance service reliability and user experience.

One Drive

• Migrate legacy file storage systems to One Drive for Business, ensuring data integrity and minimal downtime.
• Oversee storage quotas, user access, and sharing settings to maintain organizational standards.
• Implement and enforce security policies, including Data Loss Prevention (DLP), encryption, and access controls.
• Ensure compliance with industry regulations and internal governance standards for data storage and sharing.
• Monitor for and respond to security incidents related to One Drive usage.
• Provide tier 2/3 support for One Drive‑related issues, coordinating with Microsoft support as necessary.
• Develop and deliver training materials, workshops, or webinars to promote One Drive adoption.
• Integrate One Drive with other M365 services (e.g., Teams, SharePoint) to streamline workflows.
• Leverage Power Automate or similar tools to automate routine tasks and processes related to file management.
• Collaborate with developers and IT teams to enable custom integrations as needed.

MS Teams

• Plan, deploy, and configure Microsoft Teams environments according to business requirements, including tenant setup, policies, and integrations.
• Oversee day‑to‑day administration of Teams, managing users, groups, channels, and permissions. Monitor usage and maintain system health.
• Implement and manage security protocols, data governance, and compliance policies to protect organizational data and ensure regulatory adherence.
• Integrate Teams with other Microsoft 365 services (such as SharePoint,…