Senior Network & Firewall Engineer — Enterprise Infra

SANCRO PTE. LTD.; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

SANCRO PTE. LTD. seeks a Network Engineer in Singapore to support and maintain enterprise network and firewall infrastructure. The role is hands-on, covering operations, troubleshooting, maintenance, and project support across multiple sites.

The candidate should bring around 5 years of experience, strong knowledge of LAN/WAN, TCP/IP, DNS, DHCP, and experience with Cisco/ Fortinet technologies. Independent work and vendor coordination are essential.

Qualifications

• Diploma in Computer Science, Information Technology, or related discipline.
• Minimum of 5 years of experience in network engineering or IT infrastructure support.
• Experience with Zscaler is preferred.
• Hands-on experience with LAN/WAN, TCP/IP, DNS and DHCP.
• Experience with Cisco switches/routers.
• Fortinet or other firewall technologies is an advantage.
• Strong problem-solving and communication skills.
• Willingness to participate in project implementation and occasional after-hours maintenance when required.

Responsibilities

• Install, configure and maintain network and firewall equipment.
• Monitor network performance and troubleshoot connectivity and network issues.
• Perform network maintenance, upgrades, patching and configuration changes.
• Support LAN/WAN operations and connectivity across multiple sites.
• Perform basic firewall configuration and troubleshooting.
• Assist with network implementation, migration and infrastructure projects.
• Conduct network health checks and support incident resolution.
• Troubleshoot network outages and performance issues.
• Maintain network configuration, topology and technical documentation.
• Coordinate with internal teams, vendors and external stakeholders.

Skills

Network operations

Troubleshooting

Communication

Project coordination

Education

Diploma in Computer Science / Information Technology

Tools

Zscaler

Cisco switches/routers

Fortinet firewalls

LAN/WAN

TCP/IP

DNS

DHCP

Job description

SANCRO PTE. LTD. seeks a Network Engineer in Singapore to support and maintain enterprise network and firewall infrastructure. The role is hands-on, covering operations, troubleshooting, maintenance, and project support across multiple sites.

The candidate should bring around 5 years of experience, strong knowledge of LAN/WAN, TCP/IP, DNS, DHCP, and experience with Cisco/ Fortinet technologies. Independent work and vendor coordination are essential.