Lead Engineer M365 & Exchange Platform

Dyson; Singapore; On-site; SGD 140,000 - 190,000; Full time

Job summary

Dyson is recruiting a skilled M365 and Exchange Platform Engineer to own architecture, engineering, and automation of the Microsoft 365 tenant and Exchange Online. You will drive high availability, optimize performance, and reduce costs using PowerShell and Graph API automation across global tenant operations.

The role emphasizes lifecycle governance, feature rollouts, and thorough security practices, with a focus on delivering reliable SaaS infrastructure and swift incident response.

Qualifications

• Bachelor's degree or equivalent practical experience in IT/CS.
• 5–7 years hands-on engineering experience with large Microsoft 365 tenants and Exchange Online.
• Advanced capabilities with PowerShell and Graph API for automation and management.
• Microsoft 365 Certified: Enterprise Administrator Expert or Messaging Administrator Associate desirable.

Responsibilities

• Administer and optimize global Microsoft 365 tenant settings and directory sync.
• Architect, configure, and maintain Exchange Online messaging infrastructure.
• Oversee tenant lifecycle, licensing management, and cost optimization.
• Roll out new Microsoft cloud features and evaluate service updates.
• Develop Graph API and PowerShell automation to improve platform performance.
• Lead platform updates, migrations, and incident resolution with SLA focus.

Skills

PowerShell scripting

Microsoft Graph API

M365 Tenant Administration

Education

Bachelor's degree in Information Technology, Computer Science, or related field

Microsoft 365 Certified: Enterprise Administrator Expert

Tools

Microsoft 365 Admin Center

Exchange Admin Center

Entra Connect/Cloud Sync

Job description

Engineer - M365 and Exchange Platform Role: M365 and Exchange Platform Engineer Reporting to: Principal Workspace Platform Architecture and Engineering Role type: Manager

Role Purpose As the M365 and Exchange Platform Engineer, you are accountable for the architecture, engineering, operation, and automation of the Microsoft 365 tenant and Exchange Online platform. Operating as a cloud platform specialist, you will ensure high availability, optimal performance, and efficiency across the tenant. By leveraging PowerShell and Graph API automation, managing licensing lifecycles, and introducing modern M365 capabilities, you will streamline enterprise messaging and SaaS platform operations. In this role, you will lead and manage the following domains:

• M365 Tenant Administration: Managing and optimizing global Microsoft 365 tenant settings, directory synchronization, and core services.
• Exchange Online Engineering: Architecting, configuring, and maintaining enterprise Exchange Online messaging infrastructure.
• Tenant Lifecycle and License Management: Overseeing tenant lifecycle activities, optimizing license allocation, and controlling operational costs.
• Capability Rollout and Adoption: Deploying new Microsoft cloud features, evaluating service updates, and enhancing platform capabilities.
• Automation and Service Performance: Developing Graph API and PowerShell s to automate platform administration and optimize performance.

Key Skills and Qualifications

• Bachelor's degree in Information Technology, Computer Science, or related field (or equivalent practical experience).
• A minimum of 5 to 7 years of hands‑on engineering experience administering large-scale enterprise Microsoft 365 tenants and Exchange Online.
• Advanced ing capabilities using PowerShell and Microsoft Graph API for automation and tenant management.
• Microsoft 365 Certified: Enterprise Administrator Expert or Messaging Administrator Associate certifications are highly desirable.

Platform Expertise and Architecture

Deep technical mastery of M365 tenant architecture, Exchange Online messaging pipelines, hybrid mail routing, and object synchronization.

Tooling and Technical Proficiency

Expert-level proficiency in Microsoft 365 Admin Center, Exchange Admin Center, PowerShell, Graph API, and Entra Connect/Cloud Sync.

Risk Management and Availability

Ability to design redundant mail routes, establish disaster recovery procedures, and mitigate platform service disruptions.

Governance and License Control

Experience governing tenant-wide configurations, defining service quotas, and managing license pooling efficiently.

Service Delivery and SLA Management

Track record of delivering stable SaaS infrastructure services, meeting service level agreements (SLAs), and resolving complex technical escalations.

Data Analysis and Optimization

Ability to analyze M365 usage telemetry and performance metrics to drive platform cost optimization and resource allocation.

Stakeholder Management and Alignment

Strong collaboration skills to align M365 feature rollouts with business productivity requirements and IT service desk workflows.

Threat Mitigation Support

Understanding of tenant security settings, message tracing, and audit log analysis to support cyber security incident investigations.

Technical Execution and Ownership

Self-driven technical ownership to lead platform updates, tenant migrations, and infrastructure maintenance windows.

Automation Mindset

Passion for eliminating manual administration through able workflows, automated provisioning, and self-service capabilities.

Key Accountabilities and Success Measures

Tenant and Exchange Engineering Accountability: Maintain, update, and optimize the global Microsoft 365 tenant and Exchange Online infrastructure.

Success Measures: Achieve more than 99.9 percent service availability for email and core tenant services; 0 percent unhandled platform service outages.

Platform Automation and Efficiency Accountability: Develop and maintain automated workflows using PowerShell and Graph API for repetitive administrative tasks.

Success Measures: Automate more than 80 percent of routine tenant management and mailbox provisioning tasks; measurable reduction in ticket handling times.

Licensing and Capacity Governance Accountability: Govern M365 tenant licensing, removing inactive assignments and optimizing resource utilization.

Success Measures: Less than 2 percent unused or unassigned active licenses retained in inventory; 100 percent compliance with corporate licensing models.

Dyson is an equal opportunity employer. We know that great minds don't think alike, and it takes all kinds of minds to make our technology so unique. We welcome applications from all backgrounds and employment decisions are made without regard to race, colour, religion, national or ethnic origin, sex, sexual orientation, gender identity or expression, age, disability, protected veteran status or other any other dimension of diversity.