IT Support Engineer (System & Infrastructure)

HAI LECK ENGINEERING (PRIVATE) LIMITED; Singapore; On-site; SGD 70,000 - 110,000; Full time

Job summary

Hai Leck Engineering (Private) Limited in Singapore is seeking a hands-on System Engineer to manage and maintain the company’s IT infrastructure, including servers, virtualization, networks, firewalls and Microsoft 365. The role focuses on ensuring system availability, security, backups, and providing Level 1/2 support, while coordinating with internal teams and external vendors.

The ideal candidate will have strong systems administration, network troubleshooting, and IT security skills, with

Qualifications

• Diploma or degree in IT/CS or related discipline.
• 3-5 years hands-on IT infrastructure experience.
• Experience with Windows Server, AD, GPO, DNS, DHCP.
• Experience with VMware ESXi.
• Experience with Microsoft 365 admin and security.
• Strong troubleshooting, documentation, and communication skills.
• Ability to work independently and with vendors.

Responsibilities

• Manage and troubleshoot AD, GPOs, DNS, DHCP.
• Maintain VMware ESXi and virtual machines.
• Apply patches, firmware upgrades and security updates.
• Monitor servers, storage, backups and perform recovery testing.
• Manage Microsoft 365, Exchange Online, Teams, SharePoint access.
• Manage Fortinet FortiGate firewalls and network equipment.
• Provide Level 1/2 support and IT asset management.
• Maintain IT documentation and asset records.

Skills

Troubleshooting

IT security

Documentation

Independent work

Vendor coordination

Education

Bachelor's or Diploma in IT/CS

Tools

Active Directory

Group Policy

DNS

DHCP

VMware ESXi

Microsoft 365 admin

Exchange Online

Fortinet FortiGate

EDR solutions

Job description

We are seeking a a hands-on System Engineer to manage and maintain the company’s IT infrastructure, including servers, virtualisation, networks, firewalls and Microsoft 365.

The role involves ensuring system availability, infrastructure security, backup and recovery, as well as providing Level 1 and Level 2 technical support, managing endpoints and IT assets, and maintaining IT documentation.

The ideal candidate should have strong systems administration, network troubleshooting and IT security skills, with the ability to work independently and collaborate with internal teams and external vendors.

Key Responsibilities

1. Systems and Server Administration

• Manage and troubleshoot Active Directory (AD), Group Policy Objects (GPOs), Domain Name System (DNS), and Dynamic Host Configuration Protocol (DHCP) services
• Maintain VMware ESXi and virtual machines
• Perform routine system maintenance, patching, firmware upgrades and security updates
• Monitor server performance, storage and backups, and perform recovery testing
• Investigate system issues and coordinate with vendors when required

2. Cloud and Microsoft 365 Administration

• Manage Microsoft 365 user accounts, licences, access and onboarding/offboarding
• Manage and troubleshoot Exchange Online, Microsoft Teams, SharePoint access and configuration issues
• Maintain Microsoft 365 security controls, including Multi-Factor Authentication (MFA) and relevant access policies
• Monitor email security, investigate suspicious activities, and manage email protection
• Ensure compliance with IT security and operational requirements

3. Network and Firewall Security Management

• Manage and maintain Fortinet FortiGate firewalls, including firewall policies, SSL VPN and threat prevention
• Manage and troubleshoot network equipment, including routers, switches, network-attached storage (NAS), and related equipment
• Configure and troubleshoot VLANs and network connectivity
• Monitor network performance and resolve connectivity issues
• Review network access and firewall rules, and coordinate with vendors when necessary
• Coordinate with service providers, vendors and technical teams to resolve network issues

4. Endpoint Management and Technical Support

• Provide Level 1 and Level 2 support for desktop, laptop, hardware, software, printing and network issues
• Set up and deploy workstations, including operating system imaging, software installation, configuration
• Manage the central Endpoint Detection and Response (EDR) solution to support endpoint security and threat detection
• Support IoT devices, including TMS machines, and manage company device issuance and configuration
• Maintain IT asset inventory and ensure devices comply with security standard
• Troubleshoot recurring issues and implement solutions to improve system reliability and user experience

5. IT Documentation and Asset Management

• Maintain IT documentation, including system configurations, network diagrams and standard operating procedures
• Track IT equipment issuance, movement, returns and inventory
• Maintain records of hardware, software licences, warranties and other IT assets
• Document system changes, maintenance activities and incident resolutions
• Ensure IT records are accurate and up to date for audits, troubleshooting and infrastructure planning

6. General IT Operations and Security

• Perform routine infrastructure checks and preventive maintenance to minimise disruptions
• Support IT security, vulnerability remediation, access reviews and compliance requirements
• Participate in infrastructure upgrades, system migrations, and technology implementation projects as required
• Coordinate with internal stakeholders and external vendors on maintenance and technical issues
• Recommend improvements to infrastructure performance, reliability, security and operational efficiency

Job Requirements

• Diploma or Degree in Information Technology, Computer Science, Network Engineering, or a related discipline
• 3-5 years of hands-on experience in IT infrastructure administration, systems engineering, or technical support
• Practical experience administering Active Directory, Group Policy, DNS, DHCP, and Windows Server environments
• Hands-on experience with VMware ESXi and virtual machine administration
• Working knowledge of Microsoft 365 administration, including Exchange Online, Teams, SharePoint, user licensing, and access management
• Experience configuring and troubleshooting firewalls, preferably Fortinet FortiGate, including firewall policies and VPN access
• Familiarity with enterprise network equipment, including routers, switches, VLANs, and NAS devices
• Experience with backup and recovery procedures, OS patching, firmware upgrades, and infrastructure maintenance
• Knowledge of endpoint security and EDR solutions, workstation deployment, imaging, and IT asset management
• Strong troubleshooting, analytical, and problem-solving skills
• Good communication and documentation skills, with the ability to work independently and collaboratively
• Proactive, organised, and able to manage multiple technical tasks while maintaining service quality

Be a part of our diverse family at Hai Leck, embracing each other as you discover your unique career potential and find your perfect fit with us. We are committed to unlocking your potential and guiding you to success. Our employees are valued down to their skills, and we are committed to training them and expanding their knowledge.