Network Engineer

AVENSYS CONSULTING PTE. LTD.; Singapore; On-site; SGD 60,000 - 100,000; Full time

Job summary

AVENSYS CONSULTING PTE. LTD. in Singapore seeks a skilled Network Engineer to design, implement, maintain and troubleshoot enterprise network infrastructure for secure, reliable, high‑performance connectivity.

The candidate should have hands-on experience with routing and switching, network security, and solving complex networking issues across data centers and cloud integrations. You will configure LAN/WAN/WLAN, firewalls, VPNs, and monitoring tools, document configurations, participate in

Qualifications

• Diploma or degree in Computer Science, Information Technology, or a related field.
• Hands-on experience with routers, switches, firewalls, VLANs, routing, and switching technologies.
• Strong knowledge of TCP/IP, DNS, DHCP, subnetting, and IP addressing.
• Experience with routing protocols such as BGP and OSPF.
• Knowledge of network security, VPNs, ACLs, and firewall configurations.
• Experience using network monitoring and troubleshooting tools.
• Strong analytical, troubleshooting, and problem-solving skills.
• Good communication skills and the ability to work effectively with cross-functional teams.

Responsibilities

• Design, configure, implement, and maintain LAN, WAN, WLAN, and enterprise network infrastructure.
• Configure and troubleshoot network devices, including routers, switches, firewalls, and wireless access points.
• Manage routing and switching protocols such as TCP/IP, BGP, OSPF, VLANs, STP, and VPNs.
• Monitor network performance, availability, and security using network monitoring tools.
• Troubleshoot network connectivity issues, identify root causes, and implement corrective actions.
• Configure and maintain network security policies, access controls, firewall rules, and VPN connectivity.
• Perform network upgrades, patching, configuration backups, and capacity planning.
• Support data center networking, cloud networking, and network integration projects where required.
• Collaborate with infrastructure, cybersecurity, system administration, and application teams to resolve technical issues.
• Maintain network documentation, configuration records, diagrams, and incident reports.
• Participate in incident management, change management, and disaster recovery activities.
• Ensure network infrastructure complies with organizational security standards and operational requirements.

Skills

TCP/IP

DNS

DHCP

Subnetting

IP addressing

Routing

Switching

Firewalls

VPNs

Network monitoring

Troubleshooting

Communication

Education

Diploma or degree in Computer Science or Information Technology

Tools

Cisco devices

Juniper devices

Aruba devices

Fortinet devices

Palo Alto devices

Job description

Job Summary

We are looking for a skilled Network Engineer to design, implement, maintain, and troubleshoot network infrastructure to ensure secure, reliable, and high-performance connectivity across the organization. The ideal candidate should have hands-on experience in network administration, routing and switching, network security, and troubleshooting enterprise network environments.

Key Responsibilities

• Design, configure, implement, and maintain LAN, WAN, WLAN, and enterprise network infrastructure.
• Configure and troubleshoot network devices, including routers, switches, firewalls, and wireless access points.
• Manage routing and switching protocols such as TCP/IP, BGP, OSPF, VLANs, STP, and VPNs.
• Monitor network performance, availability, and security using network monitoring tools.
• Troubleshoot network connectivity issues, identify root causes, and implement corrective actions.
• Configure and maintain network security policies, access controls, firewall rules, and VPN connectivity.
• Perform network upgrades, patching, configuration backups, and capacity planning.
• Support data center networking, cloud networking, and network integration projects where required.
• Collaborate with infrastructure, cybersecurity, system administration, and application teams to resolve technical issues.
• Maintain network documentation, configuration records, diagrams, and incident reports.
• Participate in incident management, change management, and disaster recovery activities.
• Ensure network infrastructure complies with organizational security standards and operational requirements.

Required Skills and Qualifications

• Diploma or degree in Computer Science, Information Technology, or a related field.
• Relevant experience in network engineering, network administration, or infrastructure support.
• Strong knowledge of networking fundamentals, including TCP/IP, DNS, DHCP, subnetting, and IP addressing.
• Hands-on experience with routers, switches, firewalls, VLANs, routing, and switching technologies.
• Experience with routing protocols such as BGP and OSPF.
• Knowledge of network security, VPNs, ACLs, and firewall configurations.
• Experience using network monitoring and troubleshooting tools.
• Strong analytical, troubleshooting, and problem-solving skills.
• Good communication skills and the ability to work effectively with cross-functional teams.

Preferred Qualifications

• Industry certifications such as CCNA, CCNP, or equivalent networking certifications.
• Experience with Cisco, Juniper, Aruba, Fortinet, or Palo Alto networking technologies.
• Familiarity with SD-WAN, wireless networking, network automation, and cloud networking platforms such as AWS, Azure, or GCP.
• Experience supporting enterprise networks or data center environments.

Key Competencies

• Network troubleshooting and incident resolution.
• Network performance optimization and security management.
• Technical documentation and change management.
• Ability to work independently and manage multiple priorities.
• Willingness to participate in after-hours support or on-call rotations when required.