Network Engineer – AI Cloud

Superpower X AI; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

Superpower X AI in Singapore recruits a Network Engineer to own GPU cluster networks—InfiniBand/RoCE, Ethernet fabrics, and data centre connectivity. You will design for scale, build at new sites, and ensure fabric stability with fast incident resolution.

Requirements include 4+ years in large-scale networking, hands-on InfiniBand/RoCE, routing expertise, and fluency in English and Mandarin. Based in Singapore with travel to SEA sites and on-call coverage.

Qualifications

• 4+ years in data centre, service provider or large-scale cloud networking with hands-on production operations.
• Hands-on experience deploying and operating InfiniBand/RoCE fabrics, including subnet managers and QoS.
• Deep routing & switching knowledge: BGP, IS-IS or OSPF, ECMP, EVPN/VXLAN, leaf-spine designs.
• Fluency in English and Mandarin; strong written communication for design notes and incident reports.

Responsibilities

• Design network topology for new GPU clusters and sites: compute fabric, Ethernet, management, edge connectivity.
• Deploy, configure and validate networks at new data centre sites from day-0 to production fabrics.
• Own day-to-day health of InfiniBand/RoCE and Ethernet fabrics; tune QoS and congestion control.
• Troubleshoot fabric performance issues and drive root-cause analysis on incidents.
• Coordinate firmware upgrades, defects and RMAs with vendors.

Skills

InfiniBand/RoCE fabrics

Subnet managers (UFM/OpenSM)

Routing protocols (BGP/IS-IS/OSPF)

EVPN/VXLAN and leaf-spine (Clos)

Vendor platforms (NVIDIA, Cisco, Junip

Optics & cabling troubleshooting

English & Mandarin fluency

Tools

NVIDIA/Cisco/Juniper/Ruijie hardware

Job description

We run AI clusters for training and inference. As a Network Engineer, you own the networks behind our GPU clusters: the high-speed compute fabric, the data centre Ethernet fabric, out-of-band management, and connectivity to carriers and the internet.

This is a hands-on role. You will design and build out networks at new sites, keep production fabrics stable and fast, and own network issues through to root cause and permanent fix.

What you'll do

Build-out

• Design network topology for new GPU clusters and sites: compute fabric, Ethernet fabric, management network and edge connectivity, sized for scale and failure tolerance
• Deploy, configure and validate networks at new data centre sites, from day-0 out-of-band and management switches to production fabrics
• Bring up InfiniBand/RoCE compute fabrics and leaf-spine Ethernet fabrics for new GPU clusters
• Review bills of materials, rack elevations and cabling plans so each site matches the design
• Run fabric acceptance tests before clusters go live

Fabric and connectivity operations

• Own the day-to-day health, configuration consistency and performance of InfiniBand/RoCE and Ethernet fabrics
• Operate and tune subnet managers (UFM/OpenSM), QoS and congestion control on the compute fabric
• Manage data centre edge and WAN connectivity: BGP with carriers and internet exchanges, data centre interconnect
• Troubleshoot link, optics, cabling and fabric performance issues, and drive root cause analysis on network incidents
• Work with vendors on firmware upgrades, defects and RMAs

What we're looking for

• 4+ years in data centre, service provider or large-scale cloud networking, with hands-on production operations
• Hands-on experience deploying and operating InfiniBand and/or RoCE fabrics, including subnet managers, QoS and RDMA
• Deep routing and switching knowledge: BGP, IS-IS or OSPF, ECMP, EVPN/VXLAN, leaf-spine (Clos) designs
• Experience with at least one major vendor platform: NVIDIA, Cisco, Juniper or Ruijie.
• Strong troubleshooting from the physical layer up: optics, cabling, interface counters, packet captures, MTU and routing issues
• Fluent in both English and Mandarin, spoken and written
• Clear written communication: design notes, change plans and incident reports others can follow

Working arrangement

• Based in Singapore, with regular travel to our data centres across Southeast Asia
• On-call rotation required: business hours by default, plus rotating coverage for critical incidents outside business hours