Network Engineer

Logicalis Singapore PTE. LTD.; Singapore; On-site; SGD 65,000 - 100,000; Full time

Job summary

Logicalis Singapore PTE. LTD. is seeking an experienced L3 Network Engineer to design, implement, and manage enterprise network infrastructure across multi-vendor environments in Singapore.

You will serve as the escalation point for complex incidents and collaborate with L1/L2 teams, cybersecurity, and stakeholders to ensure high availability and security. Candidates should have 5–8+ years of network engineering experience, strong routing/switching skills, and CCNP or equivalent certifications.

Qualifications

• Diploma or Degree in IT, Computer Science, Networking.
• 5–8+ years of network engineering experience.
• CCNP, JNCIP, Fortinet or Palo Alto certifications preferred.

Responsibilities

• Provide L3 technical support for complex network incidents.
• Troubleshoot LAN, WAN, Internet, WLAN, VPN, routing, and firewall environments.
• Lead troubleshooting for major incidents and perform RCA.
• Mentor L1/L2 engineers and document troubleshooting procedures.
• Coordinate network changes and document configurations.

Skills

TCP/IP

DNS

DHCP

NAT

VLAN

STP

QoS

VPN

Routing

Switching

BGP

OSPF

Packet captures

Network monitoring

Multi-vendor networking

Education

Diploma or Degree in IT, Computer Science, Networking

Tools

Cisco

Fortinet

Palo Alto

Juniper

Cisco Meraki

UniFi

Job description

About Us At Logicalis Asia Pacific, this is where you belong, grow, and thrive — at one of APAC's leading AI-driven technology integrators. As the Architects of Change™, we combine global expertise with local insight to help organisations accelerate their journey toward becoming AI-ready enterprises. With 7,000+ professionals across 30 territories and more than 10,000 clients worldwide, we deliver lifecycle services across cloud, connectivity, collaboration, cybersecurity, and managed services — providing real-time visibility and intelligence across our clients' digital ecosystems. You'll belong as part of a collaborative regional team embedded within a global organisation. You'll grow through hands-on experience with the world's leading technology partners, supported by investment in certifications, consulting capability, and cross-border opportunity. And you'll thrive in a culture built on inclusion, trust, and continuous improvement. Logicalis is proud to be a Great Place to Work® Certified™ organisation across multiple APAC markets — because the commitment we bring to our clients belongs equally to our people. Join us and help shape the future of technology across APAC.

The L3 Network Engineer is responsible for providing advanced technical support, troubleshooting, implementation, and management of enterprise network infrastructure across multiple technologies and vendors. The role will serve as the Level 3 technical escalation point for complex network incidents and will work closely with L1/L2 engineers, infrastructure teams, cybersecurity teams, vendors, and business stakeholders to maintain a stable, secure, and highly available network environment.

Key Responsibilities

L3 Network Support & Troubleshooting

• Provide L3 technical support for complex network incidents escalated from L1/L2 teams.
• Troubleshoot complex issues across LAN, WAN, Internet, WLAN, VPN, routing, switching, and firewall environments.
• Perform detailed network analysis using logs, packet captures, routing tables and network monitoring tools.
• Lead troubleshooting for major incidents and provide technical support during critical outages.
• Perform root cause analysis (RCA) and identify permanent corrective actions.
• Provide technical guidance and mentoring to L1/L2 network engineers.

Network Infrastructure Management

Provide hands-on support and administration across a multi-vendor network environment, including:

• Cisco – Routers, switches, Catalyst, Nexus and related networking technologies.
• Fortinet – FortiGate firewalls, VPN, security policies and FortiManager/FortiAnalyzer where applicable.
• Palo Alto – Next-generation firewalls, security policies, VPN and related security technologies.
• Juniper – Routers, switches and enterprise networking platforms.
• UniFi – Wireless and LAN infrastructure.
• Cisco Meraki – Switches, wireless access points, security appliances and cloud-managed networking.

Routing & Switching

• Configure and troubleshoot BGP, OSPF, VLAN, STP, VRF, trunking, LACP/EtherChannel and inter-VLAN routing.
• Troubleshoot routing and connectivity issues across LAN, WAN and Internet environments.
• Analyse routing paths and network traffic to identify performance and connectivity issues.
• Support network redundancy, high availability and failover configurations.

Firewall & Network Security

• Configure, troubleshoot and maintain Fortinet and Palo Alto firewalls.
• Support firewall policies, NAT, VPN, routing and security profiles.
• Troubleshoot application connectivity and firewall-related issues.
• Work closely with cybersecurity teams on network security requirements.
• Review and implement firewall changes in accordance with approved change-management processes.

Wireless & SD-WAN

• Support enterprise wireless infrastructure across Cisco, Meraki, UniFi and other wireless platforms.
• Troubleshoot wireless connectivity, authentication, coverage and performance issues.
• Support SD-WAN and Internet connectivity where applicable.
• Monitor network performance and proactively identify potential issues.

Network Projects & Changes

• Participate in network migration, upgrade, refresh and infrastructure improvement projects.
• Perform network device upgrades, configuration changes and technology migrations.
• Prepare implementation and rollback plans.
• Conduct pre-change and post-change validation.
• Coordinate with internal teams, vendors and stakeholders during network implementations.
• Ensure all network changes are properly documented and communicated.

Incident & Problem Management

• Take ownership of complex network incidents through to resolution.
• Participate in Major Incident Management and provide technical updates.
• Perform detailed RCA for critical and recurring incidents.
• Identify opportunities to improve network reliability and reduce recurring incidents.
• Maintain technical knowledge articles and troubleshooting procedures.

Required Technical Skills

Networking Strong knowledge of TCP/IP, DNS, DHCP, NAT, VLAN, STP, QoS, VPN and network security. Strong hands-on experience with routing and switching. Good knowledge of BGP and OSPF. Strong troubleshooting skills using packet captures and network diagnostic tools. Experience with network monitoring and management platforms. Vendor Technologies

• Cisco – Routing, switching, Catalyst/Nexus
• Fortinet – FortiGate, Firewall, VPN, Security Policies
• Palo Alto – NGFW, Security Policies, VPN, NAT
• Juniper – Routing, Switching and Troubleshooting
• Cisco Meraki – Switching, Wireless, Security Appliance
• UniFi – Switching, Wireless and Network Management

Experience across multiple vendors is highly preferred.

Qualifications & Experience

• Diploma or Degree in IT, Computer Science, Networking or a related discipline.
• 5–8+ years of network engineering experience, with strong L3 troubleshooting experience.
• Hands-on experience supporting enterprise network environments.
• Experience working in a multi-vendor network environment.
• CCNP, JNCIP, Fortinet, Palo Alto or equivalent certifications are preferred.
• ITIL experience and knowledge of Incident, Problem and Change Management processes.
• Experience supporting regional or global environments is an advantage.

Key Competencies

• Strong technical troubleshooting and analytical skills.
• Strong ownership and accountability.
• Able to independently troubleshoot complex network issues.
• Strong communication and stakeholder-management skills.
• Able to work effectively under pressure during major incidents.
• Good documentation and reporting skills.
• Proactive approach to network monitoring and problem prevention.
• Ability to mentor and provide technical guidance to L1/L2 engineers.

Working Environment

• Support enterprise and regional network infrastructure.
• Participate in on-call and after-hours support.
• Support planned maintenance and network changes outside business hours.
• Participate in Major Incident Management and technical bridge calls.
• Work with regional/global teams across different time zones.
• Occasional travel to offices or data centres may be required.

At Logicalis, we are committed to creating a diverse and inclusive workplace where everyone can thrive.

Logicalis is an international solutions provider of digital services currently accelerating the digital transformation of its 10,000 customers around the world. Through a globally connected network of specialist hubs, sector‑leading experts (in education, financial services, government, healthcare, manufacturing, professional services, retail and telecommunications) and strategic partnerships (including Cisco, Microsoft, HPE, IBM, NetApp, Oracle, ServiceNow, and VMware), Logicalis has more than 6,500 employees focused on understanding customer priorities and enhancing their experience. As Architects of ChangeTM, Logicalis’ focus is to design, support, and execute customers’ digital transformation by bringing together their vision with its technological expertise and industry insights. The company, through its deep knowledge in key IT industry drivers such as Security, Cloud, Data Management and IoT, can address customer priorities such as revenue and business growth, operational efficiency, innovation, risk and compliance, data governance and sustainability. Logicalis Group, with annual revenues of $ 1.5 billion annually, maintains operations in Europe, North America, Latin America, Asia Pacific and Africa and is part of Datatec Group, which is listed on the Johannesburg Stock Exchange (JSE:DTC), with revenues of more than $ 4.1 Billion.