Mission-Critical Wireless Network Engineer (Onsite)

STARHUB LTD.; Singapore; On-site; SGD 66,960 - 111,600; Full time

Job summary

STARHUB LTD. in Singapore is seeking a Network Engineer to support and maintain mission-critical wireless and network infrastructure at client sites. You will troubleshoot, implement, and monitor Cisco and Aruba wireless solutions, switches, firewalls, and related services in a 24/7 environment.

You will coordinate with vendors, perform preventive maintenance, firmware upgrades, and participate in incident response. Strong communication and the ability to work after hours are essential.

Qualifications

• Diploma or Degree in IT/Networking required, with 3–5 years hands-on network/wireless experience.
• Strong knowledge of Cisco WLC and Aruba wireless, switching/routing, firewalls, DNS/DHCP/VLANs, and authentication systems.
• Experience with monitoring tools Cisco Catalyst Center, AirWave, SevOne, ServiceNow.
• Familiarity with incident management, RCA, and maintenance processes; enterprise or mission-critical experience is a plus.
• CCNA/CCNP, Aruba AC/AC Professional, ITIL Foundation preferred.

Responsibilities

• Support day-to-day wireless infrastructure operations and maintenance.
• Troubleshoot wireless connectivity, DNS, DHCP, captive portal, OTP login, and VLAN issues.
• Coordinate with vendors (Cisco/Aruba TAC) for issue resolution.
• Perform firmware upgrades, patches, and technology refresh for wireless/network gear.
• Assist in WLC upgrade activities, AP image updates, failover testing, and rollback planning.
• Prepare incident reports, RCA findings, and preventive recommendations.
• Maintain technical documentation and support after-hours maintenance when needed.
• Ensure governance, safety and change management compliance.

Skills

Troubleshooting

Stakeholder coordination

Communication

Independence

After-hours support

Education

Diploma/Degree in IT/Networking

Tools

Cisco Catalyst Center

AirWave

SevOne

ServiceNow

Job description

STARHUB LTD. in Singapore is seeking a Network Engineer to support and maintain mission-critical wireless and network infrastructure at client sites. You will troubleshoot, implement, and monitor Cisco and Aruba wireless solutions, switches, firewalls, and related services in a 24/7 environment.

You will coordinate with vendors, perform preventive maintenance, firmware upgrades, and participate in incident response. Strong communication and the ability to work after hours are essential.