IT Infra & System Administrator

KERRY CONSULTING PTE. LTD.; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

Kerry Consulting PTE. LTD. is sourcing an IT Infra & System Administrator for an Infrastructure & Engineering MNC in Singapore.

The role focuses on maintaining the Microsoft 365 environment, identity management, and network infrastructure while ensuring reliable day-to-day technology operations. The candidate should have a Diploma in IT and at least 5 years of hands-on IT infra experience, with strong troubleshooting and documentation skills.

Qualifications

• Diploma or equivalent in IT or related discipline with 5+ years' hands-on IT infra and end-user support.
• Experience administering Microsoft 365, including Entra ID and identity/access management.
• Strong networking knowledge; experience with firewalls, VPN, and SSO.
• Experience supporting call center environments is advantageous.

Responsibilities

• Administer the Microsoft 365 environment (Entra ID, Exchange Online, Teams, SharePoint) and manage user lifecycle, licenses, MFA, and security alerts.
• Support the full employee lifecycle from onboarding to offboarding and maintain system documentation.
• Monitor and administer network infrastructure including firewalls, switches, VPN, and Wi‑Fi; coordinate with vendors for incidents.
• Maintain IT asset inventories, manage support tickets and vendor cases, and assist in infrastructure projects and improvements.

Skills

Microsoft 365 admin

Identity & access management

Networking fundamentals

Troubleshooting

Education

Diploma in Information Technology

Tools

Microsoft Entra ID

Exchange Online

Teams

SharePoint

Job description

Overview

AnInfrastructure & Engineering MNC is seeking an IT Infra & System Administrator to support and strengthen its IT infrastructure, Microsoft 365 environment, network, and day-to-day technology operations.

Responsibilities

You will administer the Microsoft 365 environment, including Microsoft Entra ID, Exchange Online, Teams, and SharePoint, while managing user accounts, licenses, permissions, MFA, privileged access, and security alerts. You will support the full employee account lifecycle from onboarding through offboarding and maintain accurate system and operational documentation.

The role also covers the administration and monitoring of firewalls, switches, Wi-Fi, VPN connectivity, and wider network infrastructure, including vendor coordination when incidents arise. You will monitor network availability and performance, review security and endpoint protection alerts, track patch compliance and device health, and perform initial investigation and escalation of security incidents.

In addition, you will maintain IT asset inventories and network diagrams, manage IT support tickets and vendor cases, and support infrastructure projects and continuous improvements.

Requirements

You should have a Diploma or equivalent qualification in Information Technology or a related discipline, with at least 5 years of hands-on experience in IT infrastructure and end-user support. Practical experience administering Microsoft 365 is essential, including Microsoft Entra ID and related identity and access management activities.

You should have sound networking knowledge and experience working with firewalls, including areas such as VPN and SSO, together with exposure to endpoint management and security. Experience supporting call center environments or familiarity with call center technology platforms would be advantageous.

The role requires strong troubleshooting and problem-solving capabilities, with the ability to investigate issues systematically, identify root causes, and develop practical recommendations for management consideration.

License No: 16S8060 / Registration No: R26161178