Senior Microsoft 365 Platform Engineer

Senior Platform Engineer

The Apex Group was established in Bermuda in 2003 and is now one of the world’s largest fund administration and middle office solutions providers.

Our business is unique in its ability to reach globally, service locally and provide cross-jurisdictional services. With our clients at the heart of everything we do, our hard-working team has successfully delivered on an unprecedented growth and transformation journey, and we are now represented by over circa 13,000 employees across 112 offices worldwide.Your career with us should reflect your energy and passion.

That’s why, at Apex Group, we will do more than simply ‘empower’ you. We will work to supercharge your unique skills and experience.

Take the lead and we’ll give you the support you need to be at the top of your game. And we offer you the freedom to be a positive disrupter and turn big ideas into bold, industry-changing realities.

For our business, for clients, and for you

Key duties and responsibilities

• Lead and participate in O365 migration projects, including tenant-to-tenant migrations, hybrid deployments, and legacy system transitions.
• Design and implement integration strategies for Exchange Online, SharePoint Online, Teams, OneDrive, and related services.
• Collaborate with cross-functional teams to ensure smooth execution of migration plans with minimal business disruption.
• Act as the primary escalation point for complex O365 issues across Exchange Online, SharePoint, Teams, and security/compliance features.
• Provide guidance and best practices to BAU/RTE support teams for troubleshooting and service optimization.
• Actively participate in BAU/RTE activities, ensuring ongoing operational excellence and service continuity across the O365 ecosystem. Provide direct support to the BAU/RTE teams during critical incident handling, serving as a technical escalation point and collaborating to resolve high-impact issues efficiently.
• Maintain documentation and knowledge base for operational teams.
• Ensure compliance with organisational and regulatory standards across O365 services.
• Configure and maintain Data Loss Prevention (DLP), Retention Policies, eDiscovery, and Conditional Access.
• Work closely with security teams to implement Microsoft 365 security features and monitor compliance posture.
• Plan, organise, and manage O365-related projects from initiation to completion.
• Define project scope, timelines, and deliverables, ensuring alignment with business objectives.
• Communicate progress, risks, and outcomes to stakeholders effectively.
• Stay current with Microsoft 365 roadmap and recommend enhancements to improve productivity and security.
• Conduct regular health checks and performance reviews of O365 services.

Experience and skills

• Proven experience as an O365 Subject Matter Expert or similar role.
• Deep knowledge of Microsoft 365 services: Exchange Online, SharePoint Online, Teams, OneDrive, and security/compliance features.
• Hands-on experience with migration and integration projects in enterprise environments.
• Strong understanding of Entra ID, Conditional Access, and Identity Management.
• Project management skills with experience in leading technical initiatives.
• Excellent problem-solving and communication skills.
• Microsoft certifications such as MS-102 (Microsoft 365 Administrator), MS-700 (Teams Administrator) or any other relevant MS cloud certificate
• Experience with PowerShell scripting for automation and troubleshooting.           

Disclaimer: Unsolicited CVs sent to Apex (Talent Acquisition Team or Hiring Managers) by recruitment agencies will not be accepted for this position. Apex operates a direct sourcing model and where agency assistance is required, the Talent Acquisition team will engage directly with our exclusive recruitment partners.

Experience Level

Senior Level