IT System Administrator

DATAPOST PTE LTD; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

DATAPOST PTE LTD is seeking an Infrastructure System Administrator to maintain a secure, reliable data communications network and support day‑to‑day IT operations. You will deploy and monitor network infrastructure, manage AD, M365, and unified endpoint management.

The role requires hands‑on experience with Windows servers, Hyper‑V, and cross‑domain collaboration. You will ensure security baselines, perform backups, and drive IT change and incident management processes.

Qualifications

• 3+ years of experience in infrastructure engineering or enterprise IT support environments.
• Experience with end‑to‑end deployment and implementation of enterprise infrastructure projects.
• Knowledge of NetApp appliance administration or support is advantageous.

Responsibilities

• Perform system administration and daily operational support, including health checks, diagnostics, and incident response.
• Plan and execute deployments, patching, upgrades, and infrastructure enhancements following best practices.
• Maintain asset inventory for servers, endpoints, software, licenses, and related system information.
• Manage patching activities for servers, endpoints, OS, applications, and infrastructure components.
• Setup domains and support Active Directory services, including GPOs, DNS, and authentication.
• Lead end‑to‑end deployment of Microsoft 365 solutions and manage SharePoint/Teams services.

Skills

Stakeholder management

Documentation

Troubleshooting

Communication

Monitoring systems

Change management

Vendor liaison

Education

Nitec / Higher Nitec / Diploma in IT or related discipline

Tools

Active Directory

Microsoft 365

Hyper-V

SharePoint

Microsoft Intune

Microsoft Entra ID

Defender / Purview

Tectia Server

Job description

Role Summary:

The Infrastructure System Administrator would be responsible for maintaining a reliable, secure and efficient data communications network to support the organization’s day‑to‑day IT operations, system infrastructure, user support, and IT asset governance.

The ideal candidate will be able to deploy, configure, maintain and monitor all active network infrastructure to ensure smooth network operation.

Responsibilities

• Perform system administration and daily operational support, including system health checks, diagnostics, troubleshooting, patch verification, monitoring, and standby support for urgent incidents.
• Plan and execute system deployments, patching, upgrades, and infrastructure enhancements following best practices, including build, test, snapshot, pilot, release, monitor, and rollback activities.
• Maintain asset inventory records for servers, endpoints, infrastructure components, software, licenses, and related system information.
• Manage patching activities for servers, endpoints, operating systems, applications, and infrastructure components, including patch planning, deployment, verification, and reporting.
• Setup domains and support Active Directory services, including domain controllers, user/group management, Group Policy, DNS, authentication, and related directory services.
• Manage and maintain Windows servers, Windows clients, Active Directory, domain controllers, file servers, Wintel and Linux environments, including migrations, installations, upgrades, monitoring, and performance optimization
• Perform Windows server and client hardening in accordance with security baselines, policies, and best practices.
• Lead and support end‑to‑end deployment and implementation of Microsoft 365 solutions across multiple domains.
• Manage and support Microsoft 365 collaboration platforms, including SharePoint and Microsoft Teams, to ensure seamless communication and productivity.
• Oversee identity, endpoint, and security solutions using Microsoft Entra ID, Microsoft Defender, Microsoft Purview, and Microsoft Intune.
• Manage Unified Endpoint Management and Mobile Device Management across various device types, including configuration, policy enforcement, compliance, and device lifecycle management.
• Administer and maintain virtualized infrastructure using Microsoft Hyper‑V, where applicable.
• Administer and support secure file transfer and managed file transfer platforms, including Tectia Server and IBM Sterling Connect:Direct.
• Handle all systems and data backup activities, including backup monitoring, verification, restoration support, and issue resolution.
• Support Business Continuity Planning exercises, including preparation, execution, validation, and post‑exercise follow‑up.
• Perform monthly reviews and furnish monthly reports for both Production and Corporate environments.
• Support IT operations, incident management, and change management processes, including planning, executing, and closing change requests and deployments.
• Troubleshoot and resolve infrastructure, endpoint, M365, identity, backup, file transfer, patching, asset inventory, and security‑related issues in a timely manner.
• Liaise with vendors, internal stakeholders, and business users to gather requirements, provide technical recommendations, resolve incidents, and improve system stability, security, and performance.
• Lead new infrastructure projects and enhancements, ensuring smooth rollout with minimal disruption to business operations.
• Ensure proper documentation of system configurations, processes, change records, implementation procedures, backup procedures, BCP records, asset inventory, patching records, hardening standards, and operational support guides.

Qualifications

• Nitec, Higher Nitec, Diploma, or equivalent qualification in Information Technology or a related discipline
• Minimum 3 years of experience in infrastructure engineering or enterprise IT support environments.
• Proven experience in end‑to‑end deployment and implementation of enterprise infrastructure projects.
• Knowledge of NetApp appliance administration or support is advantageous.
• Ability to monitor systems, analyse utilisation, troubleshoot performance issues, and generate alerting or reporting insights.
• Strong stakeholdermanagement, documentation, troubleshooting, and communication skills.