Senior APAC Network Engineer — GPU Cluster Deployments

nscaleoperationsukltd; United States; Remote; USD 94,000 - 141,000; Full time

Job summary

Nscale is seeking a Senior Network Engineer to design, deploy, and validate high-performance networks for GPU clusters across APAC. Based in Singapore, you will bring designs to production, validate fabrics, manage front-end and WAN edge, and coordinate with Europe and the US. Occasional travel to sites and partners will be required.

You will work closely with field teams, own network automation improvements, and write runbooks to ensure repeatable builds across sites and regions.

Qualifications

• 5+ years of network engineering experience in large-scale data centre, cloud, or HPC environments.
• Experience at a hyperscaler or major network vendor (e.g. Microsoft, AWS, Oracle/OCI, Cisco) or a comparable large-scale network.
• Strong hands-on knowledge of routing and switching: BGP, OSPF, EVPN/VXLAN, ECMP, and L2/L3 data centre design.
• Experience deploying and operating cluster networks, ideally including InfiniBand or RoCE fabrics.
• Familiarity with the APAC data centre and carrier landscape, including working with regional providers.
• Practical experience with network automation (Python, Ansible, or similar).
• Calm, methodical troubleshooter who can work under deadline pressure on live builds.
• Willingness to travel across Asia-Pacific as needed.
• Both Mandarin written and verbal communication skills would be preferred.

Responsibilities

• Deploy, configure, and validate high-performance Ethernet and InfiniBand fabrics for large GPU clusters at our APAC sites.
• Bring up front-end, storage, and management networks and WAN edge connectivity for new sites and expansions in the region.
• Work with carriers, colocation providers, and IXPs across APAC to deliver circuits, cross-connects, and peering.
• Run network acceptance testing and performance validation ahead of customer handover.
• Troubleshoot and resolve issues across routing, switching, optics, and cabling during build and early life.
• Apply Nscale's global reference designs and build standards, and feed back what you learn in the field to Network Architecture.
• Build and improve automation for provisioning, configuration, and validation.
• Partner with Technical Program Managers, Data Centre Operations, and vendors to keep builds on schedule.

Skills

BGP

OSPF

EVPN/VXLAN

ECMP

DC design

Networking automation

Tools

InfiniBand

RoCE

Python

Ansible

SONiC

Job description

Nscale is seeking a Senior Network Engineer to design, deploy, and validate high-performance networks for GPU clusters across APAC. Based in Singapore, you will bring designs to production, validate fabrics, manage front-end and WAN edge, and coordinate with Europe and the US. Occasional travel to sites and partners will be required.

You will work closely with field teams, own network automation improvements, and write runbooks to ensure repeatable builds across sites and regions.