Lead Engineer – M365 & Exchange Platform

Dyson Operations Pte Ltd; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Dyson Operations Pte Ltd is seeking a skilled M365 and Exchange Platform Engineer to own the architecture, engineering, operation, and automation of the Microsoft 365 tenant and Exchange Online platform in our enterprise environment.

You will lead the deployment of new M365 features, manage licensing lifecycles, automate tasks with PowerShell and Graph API, and ensure high availability and performance across the tenant.

Qualifications

• Bachelor's degree in IT, CS, or related field.
• 5–7 years hands-on engineering experience with large-scale M365 and Exchange Online.
• Advanced PowerShell and Graph API automation skills.
• Microsoft 365 certifications are highly desirable.

Responsibilities

• Architect, engineer, operate, and automate the M365 tenant and Exchange Online platform.
• Design redundant mail routes and disaster recovery procedures.
• Develop Graph API and PowerShell scripts to automate administration.
• Oversee license lifecycle management and cost optimization.

Education

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

5–7 years hands-on engineering experience administering large-scale Microsoft 365 tenants and Exchange Online

Advanced scripting capabilities using PowerShell and Microsoft Graph API for automation

Microsoft 365 Certified: Enterprise Administrator Expert or Messaging Administrator Associate certifications desirable

Tools

PowerShell

Graph API

Entra Connect/Cloud Sync

Microsoft 365 Admin Center

Exchange Admin Center

Job description

Engineer - M365 and Exchange Platform

Role: M365 and Exchange Platform Engineer

Reporting to: Principal Workspace Platform Architecture and Engineering

Role type: Manager

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 scripts 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 scripting 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 scriptable 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.