System & Network engineer

Adventus Singapore; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

Adventus Singapore is seeking a capable IT Systems Administrator to manage virtualization platforms (Hyper-V/VMware) and administer Windows Server environments. You will design and troubleshoot LAN/WAN networks, monitor performance, and ensure high availability of IT services.

Responsibilities include system upgrades, patching, backup and DR processes, and maintaining thorough documentation. The role requires 2–4 years' hands-on experience and a Diploma or Degree in IT or CS.

Qualifications

• Diploma or Degree in Information Technology, Computer Science, or related field.
• 2–4 years of relevant experience in system and network administration.
• Hands-on experience with Hyper-V and/or VMware virtualization platforms; Windows Server (AD, DNS, DHCP, GP); network infrastructure (switching, routing, firewall).

Responsibilities

• Manage and maintain virtualization platforms (Hyper-V and VMware).
• Administer and support Windows Server environments.
• Design, implement, and troubleshoot LAN/WAN, VPN, and firewall infrastructure.
• Monitor system performance and ensure high availability of IT services.
• Perform system upgrades, patching, and routine maintenance.
• Troubleshoot hardware, software, and network issues.
• Support backup, disaster recovery, and business continuity processes.
• Maintain documentation of systems, configurations, and procedures.
• Collaborate with internal teams and vendors for project implementation and support.

Skills

Troubleshooting

IT infrastructure

Teamwork

Documentation

Education

Diploma or Degree in IT/CS

Tools

Hyper-V

VMware

Windows Server (AD, DNS, DHCP, GP)

Network infrastructure (LAN/WAN, firewall)

Job description

Key Responsibilities

• Manage and maintain virtualization platforms (Hyper-V and VMware)
• Administer and support Windows Server environments
• Design, implement, and troubleshoot network infrastructure (LAN/WAN, VPN, firewall)
• Monitor system performance and ensure high availability of IT services
• Perform system upgrades, patching, and routine maintenance
• Troubleshoot hardware, software, and network issues
• Support backup, disaster recovery, and business continuity processes
• Maintain proper documentation of systems, configurations, and procedures
• Collaborate with internal teams and vendors for project implementation and support

Requirements

• Diploma or Degree in Information Technology, Computer Science, or related field
• Minimum 2–4 years of relevant experience in system and network administration
• Hands-on experience with:Hyper-V and/or VMware virtualization platformsWindows Server (Active Directory, DNS, DHCP, Group Policy)Network infrastructure (switching, routing, firewall)

Preferred / Added Advantage

• Experience with Zscaler (ZIA/ZPA)
• Experience with Network Access Control (NAC) solutions (e.g., Cisco ISE, FortiNAC)
• Familiarity with Microsoft Azure (IaaS, networking, identity)
• Knowledge of security best practices and frameworks
• Relevant certifications (e.g., Microsoft, VMware, Cisco, Azure)

Key Skills

• Strong troubleshooting and problem-solving skills
• Good understanding of IT infrastructure and security concepts
• Ability to work independently and in a team
• Good communication and documentation skills