Network Infra Engineer (Tier 3)

Singtel; Singapore; On-site; Confidential; Full time

Job summary

Singtel is seeking a Network Infra Engineer to act as the 24x7 L3 escalation point and provide leadership across core IPVPN infrastructure. You drive complex fault resolution, design reviews, and multi-vendor deployments to maintain service stability.

Role requires strong routing protocol expertise (OSPF, BGP, MP-BGP, MPLS, TE, QoS) and a proven ability to lead during major incidents while coordinating with vendors and cross-functional teams.

Qualifications

• Minimum 5 years in Telco/carrier-grade environment with leadership experience.
• Strong knowledge of telco and enterprise networks.
• Expertise in routing protocols: OSPF, BGP, MP-BGP, MPLS, TE, QoS.
• Proficient in Internetworking and IP routing for MPLS/IP-VPN networks.
• Experience with Cisco and/or Juniper routing platforms.
• Ability to lead during major incidents and mentor teams.
• Strong communication and stakeholder management.
• Certs like JNCIE/CCIE/CCNP/NSE are a plus.

Responsibilities

• Act as the 24x7 L3 escalation point for IP network issues and ensure timely resolution.
• Lead troubleshooting and RCAs for complex network problems and drive preventive actions.
• Provide technical leadership during major incidents, overseeing governance, incident, and change management.
• Lead design reviews and oversee rollout of IP network infrastructure across vendors.
• Perform risk assessments and ensure security audits and timely patching.
• Monitor IP network performance and propose software/hardware enhancements.
• Collaborate with vendors, engineering and cross-functional teams to resolve escalations.
• Prepare network performance reports and train Tier 1/2 engineers.

Skills

L3 escalation

Network troubleshooting

Vendor coordination

Stakeholder management

Routing protocols

MPLS/IP-VPN

Cisco/Juniper

Tools

Cisco routers

Juniper routers

Job description

An empowering career at Singtel begins with a Hello. Our purpose, to Empower Every Generation, connects people to the possibilities they need to excel. Every "hello" at Singtel opens doors to new initiatives, growth, and BIG possibilities that takes your career to new heights. So, when you say hello to us, you are really empowered to say…“Hello BIG Possibilities”.

The Network Infra Engineer is part of the 3rd Level Telco Infrastructure Operations, providing expert technical support and leadership across core infrastructure under enterprise services.

The role serves as the highest technical escalation point within the infrastructure team, ensuring service stability, secure and compliant infrastructure operations, successful implementation of complex IPVPN solutions, and continuous service improvement across multi-vendor environments (Juniper, Cisco, Fortinet).

Make An Impact By

• Act as the 24x7 L3 escalation point for Operations and Provisioning teams on IP network issues, ensuring timely resolution of complex faults and service disruptions.
• Lead troubleshooting, root cause analysis, and resolution of complex and chronic network problems, driving preventive and long-term corrective actions.
• Provide technical leadership during major incidents, overseeing incident, problem, and change management from a technical governance perspective.
• Lead design reviews and oversee implementation, expansion, upgrades, and roll-outs of IP network infrastructure across multi-vendor environments.
• Perform risk and impact assessments for hardware/software advisories, conduct preventive maintenance, and ensure infrastructure security through audits and timely patching.
• Monitor and analyze IP network performance, proactively recommending enhancements including software and hardware upgrades to improve stability and performance.
• Work closely with vendors, partners, engineering, and cross-functional teams to resolve escalated technical issues and support new product or feature deployments.
• Prepare network performance and statistical reports and provide technical guidance and training to Tier 1 and Tier 2 engineers to strengthen operational capability.

Skills For Success

• Minimum of 5 years' experience in similar capacity or in Service provider or carrier-grade environment experience; leadership of technical teams; security/vulnerability management exposure.
• Good knowledge on Telco and enterprise network and technologies.
• Strong understanding of routing protocols like OSPF, BGP, MP-BGP, MPLS, TE, QoS.
• Possess good level of knowledge in Internetworking, IP routing protocols, troubleshooting for MPLS/IP VPN based networks.
• Possess good working knowledge in Cisco and/or Juniper routers architecture.
• Possess good analytical and trouble-shooting skills in technical fault isolation and rectification.
• Ability to lead during major incidents
• Strong communication & stakeholder management
• Candidates with JNCIE/ CCIE/ CCNP/ NSE certification will be added advantage