Senior IT System Adminstrator - Microsoft Infrastructure & Cloud

Michael Page Singapore; Singapore; Hybrid; SGD 100,000 - 167,000; Full time

Job summary

Michael Page Singapore is seeking an experienced IT Infrastructure professional to drive core Windows Server environments, identity and access management, and Microsoft 365 services in a growing business. You will own hybrid cloud initiatives, strengthen security controls, and contribute to ongoing digital transformation projects.

You'll be hands-on with Azure administration, on-premise systems, and backup/recovery capabilities, delivering high availability and seamless user experiences across

Qualifications

• At least 5 years of experience in IT operations, Systems Administration, or Infrastructure Engineering.
• Strong experience administering Windows Server environments in an enterprise setting.
• Hands-on with Active Directory, Group Policy, DNS, and DHCP.
• Proven experience managing Microsoft 365 services (Exchange Online, SharePoint, Teams).
• Knowledge of Microsoft security technologies, conditional access policies, and identity governance.
• Experience with Azure administration and hybrid cloud environments is highly advantageous.
• Familiarity with Linux server administration is beneficial.
• Strong troubleshooting, analytical and problem-solving skills.
• Relevant Microsoft certifications are an added advantage.

Responsibilities

• Manage and optimise enterprise Windows server environments for high availability and performance.
• Oversee identity and access management services, including directory services and policy administration.
• Administer Microsoft 365 technologies to support collaboration tools and user lifecycle management.
• Strengthen infrastructure security through access controls and identity protection measures.
• Monitor system performance and troubleshoot infrastructure, application, and authentication issues.
• Support business continuity with backup, recovery and disaster recovery capabilities.
• Participate in infrastructure enhancement projects, cloud migrations, system upgrades and technology modernisation.

Skills

Troubleshooting

Analytical thinking

Problem solving

Tools

Active Directory

Group Policy

DNS

DHCP

Microsoft 365

Exchange Online

SharePoint

Microsoft Teams

Azure administration

Hybrid cloud

Linux administration

Job description

• Drive core infrastructure and cloud operations in a growing business
• Own Microsoft 365, Active Directory and hybrid environment initiatives

About Our Client

Our client is a recognised organisation with a strong presence in the consumer services sector, serving a broad customer base through a network of physical and digital channels. With an ongoing focus on operational excellence, technology transformation, and customer experience, the company continues to invest in modern IT platforms and infrastructure capabilities. The organisation offers a collaborative working environment where technology professionals are empowered to contribute to infrastructure improvements, automation initiatives, and long-term digital transformation projects. Employees benefit from exposure to both established enterprise systems and emerging cloud technologies, providing strong opportunities for professional development and career progression.

Job Description

• Manage and optimise enterprise Windows server environments to ensure high availability, performance, and operational stability.
• Oversee identity and access management services, including directory services, authentication platforms, and policy administration.
• Administer Microsoft 365 technologies, supporting collaboration tools, messaging platforms, and user lifecycle management.
• Strengthen infrastructure security through the implementation of access controls, security policies, and identity protection measures.
• Monitor system performance and proactively troubleshoot infrastructure, application, and authentication-related issues.
• Support business continuity by maintaining backup, recovery, and disaster recovery capabilities.
• Participate in infrastructure enhancement projects, cloud migrations, system upgrades, and technology modernisation initiatives.

The Successful Applicant

• At least 5 years of experience in Systems Administration, Infrastructure Engineering, or a related IT operations role.
• Strong experience administering Windows Server environments in an enterprise setting.
• Hands-on expertise with Active Directory, Group Policy, DNS, DHCP, and identity management technologies.
• Proven experience managing Microsoft 365 services, including Exchange Online, SharePoint, and Microsoft Teams.
• Knowledge of Microsoft security technologies, conditional access policies, and identity governance.
• Exposure to Microsoft Azure administration and hybrid cloud environments would be highly advantageous.
• Familiarity with Linux server administration is beneficial.
• Strong troubleshooting, analytical, and problem-solving skills.
• Relevant Microsoft certifications would be an added advantage.

What's on Offer

• Opportunity to play a key role in supporting and evolving critical business infrastructure.
• Exposure to both on-premise and cloud technologies within a modern hybrid environment.
• Involvement in transformation, migration, and technology improvement projects.
• Collaborative and supportive technology team with opportunities to contribute to strategic initiatives.
• Ongoing learning and professional development opportunities, including certification support.
• Competitive remuneration package and employee benefits.