Enterprise Network Engineer — Security & Automation

Quess Singapore; Singapore; On-site; SGD 60,000 - 120,000; Full time

Job summary

Quess Singapore is seeking a Network Engineer to provide day-to-day operations and project support for enterprise network and security infrastructure. You will monitor, troubleshoot, and maintain network equipment, while coordinating with vendors and internal teams.

The role emphasizes BAU support, project delivery, and after-hours standby. Candidates with strong certifications (CCNP/CCIE) and experience across firewalls, NAC, and SD-WAN are preferred.

Qualifications

• 3 years of relevant network engineering experience.
• Hands-on with firewalls, switches, routers, load balancers, proxy, NAC, wireless, and VPN.
• Knowledge of Aruba ClearPass (NAC).
• Experience with Palo Alto Firewall, Alcatel switches, Aruba Wireless Controllers, RSA, F5 VPN, and Alteon Load Balancers.
• Knowledge of SD-WAN and VxLAN.
• AWS/cloud infrastructure knowledge is a plus.
• Experience in network infrastructure projects and strong project management.

Responsibilities

• Provide BAU operational support and administration of network and security infrastructure.
• Monitor network performance, availability, bandwidth, and health of network equipment.
• Troubleshoot and resolve network incidents, outages, and service requests with minimal disruption.
• Manage and maintain firewalls, switches, routers, proxy servers, load balancers, NAC, wireless, and VPN infrastructure.
• Support network projects, infrastructure upgrades, and implementation of new network solutions.
• Perform firmware upgrades, patches, hot fixes, and security configuration updates.
• Collaborate with vendors, service providers, business partners, and internal IT teams for issue resolution.
• Support network equipment procurement and coordinate subcontractors for network installations.
• Implement automation and innovative solutions to improve network efficiency and reliability.
• Maintain network documentation, diagrams, asset inventories, and security policy documents.
• Ensure compliance with configuration, change management, corporate security policies, and audit requirements.
• Perform physical network asset verification and maintain accurate equipment records.
• Provide standby and after-hours support when required.
• Keep up to date with emerging networking technologies, monitoring tools, and industry best practices.

Skills

Network engineering

Firewall expertise

Switches/routers

Load balancers

NAC/Wireless/VPN

After-hours support

Tools

Aruba ClearPass

Palo Alto Firewall

Alcatel switches

Aruba Wireless Controllers

RSA

F5 VPN

Alteon Load Balancers

Job description

Quess Singapore is seeking a Network Engineer to provide day-to-day operations and project support for enterprise network and security infrastructure. You will monitor, troubleshoot, and maintain network equipment, while coordinating with vendors and internal teams.

The role emphasizes BAU support, project delivery, and after-hours standby. Candidates with strong certifications (CCNP/CCIE) and experience across firewalls, NAC, and SD-WAN are preferred.