Onsite Wireless Network Engineer - 24/7 Incident & Upgrades

StarHub Ltd; Singapore; On-site; SGD 60,000 - 100,000; Full time

Job summary

StarHub Ltd. invites applications for a Network Engineer to support and maintain mission-critical wireless and network infrastructure at client sites in Singapore.

The role covers troubleshooting, incident response, preventive maintenance, and coordination with Cisco/Aruba TAC for large-scale wireless environments operating around the clock. You will work onsite in Singapore, dealing with WLCs, Aruba solutions, switches, firewalls, and captive portals, while ensuring change management and

Qualifications

• Diploma or Degree in Information Technology, Computer Engineering, Network Engineering, or related field.
• Minimum 3–5 years of hands-on experience in network and wireless infrastructure support.
• Familiarity with incident management, RCA preparation, and maintenance support processes.

Responsibilities

• Support day-to-day operations of wireless infrastructure including Cisco Wireless solutions, Aruba solutions, switches, firewalls, captive portals, and authentication systems.
• Perform troubleshooting for Wireless connectivity issues, DNS, DHCP, captive portal access, OTP login issues, VLAN routing, authentication failures, and internet access problems.
• Manage service technical escalations and support major incident troubleshooting during service disruptions.
• Support preventive maintenance, firmware upgrades, patching, and technology refresh activities for wireless and network infrastructure.
• Support WLC upgrade activities including Access Point image updates, failover testing, rollback planning, and validation activities.
• Work closely with vendor TAC such as Cisco TAC and Aruba TAC for issue analysis and problem resolution.
• Perform root cause analysis (RCA) and prepare incident reports, technical findings, and preventive recommendations.
• Support implementation activities including Access Point deployment, switch replacement, firewall migration, SSL certificate updates, and network migrations.
• Coordinate with stakeholders, vendors, contractors, and facility management teams during maintenance and implementation activities.
• Support testing activities such as congestion testing, failover testing, WiFi roaming optimization, and POE/network validation.
• Monitor infrastructure health using tools such as Catalyst Center, AirWave, SevOne, LogicMonitor, NetAlly.
• Fluent in ITSM Incident, Change Management, Service Request platforms such as ServiceNow.
• Maintain technical documentation including install plans, diagrams, inventory records, validation evidence, and maintenance reports.
• Support after-office-hour maintenance windows, standby support, and emergency troubleshooting activities.
• Ensure compliance with operational governance, safety requirements, and change management procedures.

Skills

WLC (Cisco)

Aruba Wireless

Switching & routing

Network security

DNS/DHCP/VLANs

Troubleshooting

Communication

Stakeholder coordination

Education

IT/Computer/Network Engineering degree

Tools

Cisco Catalyst Center

AirWave

SevOne

ServiceNow

Job description

StarHub Ltd. invites applications for a Network Engineer to support and maintain mission-critical wireless and network infrastructure at client sites in Singapore.

The role covers troubleshooting, incident response, preventive maintenance, and coordination with Cisco/Aruba TAC for large-scale wireless environments operating around the clock. You will work onsite in Singapore, dealing with WLCs, Aruba solutions, switches, firewalls, and captive portals, while ensuring change management and