Senior System Administrator

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.

Self-motivated, results-oriented, and able to work effectively both independently and as part of a team.

Strong organizational skills with good attention to detail.

If interested, please submit your application to cvs@jdawms.com with your expected salary and resume. We regret that only short-listed candidates will be contacted shortly. By submitting your application or resume, you agree to the collection, use, retention, and sharing of your personal information with potential employers for their assessment. JDA WMS Pte Ltd | EA Personnel: Pham Thi Tuyet Mai  EA License No: 23S1595 | EA Registration No: R25127838