Network Engineer

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

Job Description

This role will be based at client site. Network Engineer is responsible for supporting and maintaining mission-critical Wireless network infrastructure. The role involves troubleshooting, maintenance, incident response, preventive maintenance, implementation activities, vendor coordination, and support for large-scale wireless environments operating in a 24/7 environment.

Job 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.

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.

Strong knowledge of:

• Cisco Wireless LAN Controllers (WLC)
• Aruba Wireless solutions
• Switching and routing technologies
• Firewalls and network security concepts
• DNS, DHCP, VLANs, and authentication systems

Experience with monitoring and management tools such as:

• Cisco Catalyst Center
• AirWave
• SevOne
• ServiceNow
• Familiarity with incident management, RCA preparation, and maintenance support processes.
• Experience supporting enterprise or mission-critical environments is an advantage.
• Good troubleshooting, communication, and stakeholder coordination skills.
• Ability to work independently and support after-hours maintenance activities when required.

Preferred Certifications

• Cisco Certified Network Associate (CCNA)
• Cisco Certified Network Professional (CCNP)
• Aruba Certified Mobility Associate/Professional
• ITIL Foundation Certification

Work Arrangement

• Onsite support role
• May require standby support, shift work, and after-office-hour maintenance activities depending on operational requirements.