Senior System Administrator - 365 Security & Network Infra

MTC Consulting Pte. Ltd.; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

MTC Consulting Pte. Ltd. is seeking an IT professional to support and manage Microsoft 365 services including Exchange Online, OneDrive and Teams.

You will administer Active Directory, user accounts, access rights and security policies, and handle security features such as MFA and Defender. The role also covers network and Windows device support, system monitoring, deployment and migration of Microsoft 365, as well as patching, backup, and maintaining IT documentation.

Qualifications

• Diploma in Computer Science, IT or equivalent.
• 3–5 years IT experience, preferably with cybersecurity exposure.
• Hands-on Microsoft 365 administration and email systems experience.
• Good knowledge of Active Directory, Windows environments and Microsoft Office.

Responsibilities

• Manage and support Microsoft 365 services including Exchange Online, OneDrive and Teams.
• Administer Active Directory, user accounts, access rights and security policies.
• Manage Microsoft 365 security features such as MFA, Conditional Access, Defender and DLP.
• Support network infrastructure including firewalls and VPN connectivity.
• Provide IT support for Windows devices, Microsoft Office, printers and other peripherals.
• Monitor system performance and troubleshoot issues involving servers, networks and endpoints.
• Support Microsoft 365 deployment, migration and tenant administration.
• Perform system maintenance, patching, backup and recovery activities.
• Maintain proper IT documentation, system configurations and procedures.
• Work closely with vendors and internal teams to ensure smooth IT operations.

Skills

Microsoft 365 Administration

Active Directory

Security policy management

IT troubleshooting

Education

Diploma in Computer Science/IT

Tools

Windows Server

Firewall/VPN platforms

Job description

MTC Consulting Pte. Ltd. is seeking an IT professional to support and manage Microsoft 365 services including Exchange Online, OneDrive and Teams.

You will administer Active Directory, user accounts, access rights and security policies, and handle security features such as MFA and Defender. The role also covers network and Windows device support, system monitoring, deployment and migration of Microsoft 365, as well as patching, backup, and maintaining IT documentation.