Lead Engineer – M365 & Exchange Platform

Dyson Institute; Singapore; On-site; SGD 120,000 - 160,000; Full time

Job summary

Dyson Institute is seeking an experienced M365 and Exchange Platform Engineer to own the architecture, engineering, operation, and automation of the Microsoft 365 tenant and Exchange Online platform. You will lead design for hybrid mail routing, tenant lifecycle management, and Graph API/PowerShell automation to improve availability, performance, and cost efficiency across the enterprise messaging stack.

Collaborating with security and IT teams, you will implement scalable governance and

Qualifications

• Bachelor's degree required or equivalent practical experience.
• 5–7 years hands-on experience managing large-scale Microsoft 365 and Exchange Online.
• Advanced scripting using PowerShell and Graph API.
• M365 certifications highly desirable.

Responsibilities

• Architect, engineer, operate, and automate Microsoft 365 and Exchange Online platforms.
• Ensure high availability and performance of the tenant.
• Develop Graph API and PowerShell automation for routine tasks.
• Manage licensing lifecycles and optimize costs.
• Lead platform updates and tenant migrations.

Skills

M365 Tenant Administration

Exchange Online Engineering

PowerShell

Microsoft Graph API

Cloud Automation

Education

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

Tools

Microsoft 365 Admin Center

Exchange Admin Center

PowerShell

Graph API

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 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. At Dyson we are focused on solving the problems that others have ignored; solving them first using our technology and ingenuity. In order to achieve this we need to pioneer technologies that are different and authentic. This is the core of what we do and who we are. We must strive to create the future, every single day by developing new things, different things, things that go against the grain with a diverse and global team of ingenious minds. Dyson employs 14,000 people and is present in more than 80 countries. And while we are growing fast we want Dyson to remain a start‑up in spirit with the freedom of experimentation and learning, constantly reinventing our products as well as reinventing how we work, how we sell and how we support our owners. At the same time we are working through the James Dyson Foundation, James Dyson Award and Dyson Institute to inspire future engineers and pioneering a new approach to engineering education. Underlining everything we do in this diverse environment is the need to always show respect, supporting each other as one team to overcome whatever challenges we encounter. We drive empowerment, development and equality in an inclusive environment for our people around the world. The future doesn’t just happen, we look to make it happen, to achieve leaps through pioneering new ideas.