Senior System Administrator

JDA WMS PTE. LTD.; Singapore; On-site; SGD 48,000 - 72,000; Full time

Job summary

JDA WMS PTE. LTD. in Singapore is seeking a hands-on Microsoft 365 Administrator to join its IT team. You will manage Exchange Online, OneDrive, Teams, and Active Directory to ensure reliable user access.

Responsibilities include implementing security controls (MFA, Conditional Access, Defender, DLP), managing VPNs and network devices, performing patching, backups, and daily user support for Windows and Office.

Qualifications

• Minimum Diploma in Computer Science, Information Technology, or a related discipline.
• Hands-on experience in monitoring, administering, and maintaining Microsoft 365 email systems, particularly Exchange Online.
• Preferably 3-5 years of relevant experience in system administration, IT infrastructure, IT operations, or cybersecurity.
• Strong working knowledge of Microsoft 365 administration and Microsoft Office applications.
• Experience with Active Directory, network infrastructure, firewalls, VPNs, endpoint administration, and IT security controls is preferred.

Responsibilities

• Administer and support Microsoft 365 services (Exchange Online, OneDrive, Teams).
• Manage Active Directory: user provisioning, permissions, group policies, and accounts.
• Implement and monitor Microsoft 365 security controls (MFA, Conditional Access, Defender, DLP).
• Support network infrastructure: firewalls, site-to-site and remote VPNs.
• Provide user support for Windows, Office, printers, and peripherals.
• Monitor servers and endpoints; troubleshoot issues.
• Support deployment, migration, configuration, and tenant administration.
• Regular maintenance: patching, backup, recovery, updates.
• Maintain up-to-date IT documentation.
• Coordinate with vendors and stakeholders to resolve issues.

Skills

Microsoft 365 administration

Troubleshooting

Security administration

Office applications

Communication skills

Education

Diploma in Computer Science/IT or related

Tools

Exchange Online

Active Directory

Microsoft Defender

VPNs

Firewalls

Job description

Responsibilities

• Administer, configure, maintain, and provide ongoing support for Microsoft 365 services, including Exchange Online, OneDrive, and Microsoft Teams.

• Manage Active Directory environments, including user account provisioning, access permissions, group policies, and account administration.

• Implement, monitor, and maintain Microsoft 365 security and compliance controls, including Multi-Factor Authentication (MFA), Conditional Access, Microsoft Defender, and Data Loss Prevention (DLP).

• Manage and support network infrastructure, including firewalls, site-to-site VPNs, and remote-access VPN connectivity.

• Provide technical and desktop support to end users for Windows devices, Microsoft Office applications, printers, and other peripherals.

• Monitor the performance and availability of servers, endpoints, and related IT systems, and troubleshoot technical issues when required.

• Support Microsoft 365 deployment, migration, configuration, and tenant administration activities.

• Perform regular system maintenance, including patch management, backup, recovery, and system updates.

• Maintain accurate and up-to-date IT documentation, including system configurations, procedures, technical records, and operational guidelines.

• Coordinate with external vendors and internal stakeholders to resolve technical issues and ensure smooth day-to-day IT operations.

Requirements

• Minimum Diploma in Computer Science, Information Technology, or a related discipline.

• Hands-on experience in monitoring, administering, and maintaining Microsoft 365 email systems, particularly Exchange Online.

• Preferably 3-5 years of relevant experience in system administration, IT infrastructure, IT operations, or cybersecurity.

• Strong working knowledge of Microsoft 365 administration and Microsoft Office applications.

• Experience with Active Directory, network infrastructure, firewalls, VPNs, endpoint administration, and IT security controls is preferred.

• Good troubleshooting and problem-solving skills with the ability to identify and resolve system and user-related issues.

• Good verbal and written communication skills.