AI Infrastructure Support Engineer

NSCALE OPERATIONS APAC PTE. LTD.; Singapore; On-site; SGD 65,000 - 95,000; Full time

Job summary

NSCALE OPERATIONS APAC PTE. LTD. is seeking an experienced infrastructure support engineer to join our on-site Singapore team. You will handle tickets, triage GPU nodes, perform hardware diagnostics, and collaborate with Engineering during incidents or changes.

Responsibilities include runbook-led diagnostics, evidence collection for RMAs, observing and improving dashboards, and contributing to automation. Travel to customer sites may be required as part of deployments and support.

Qualifications

• 3+ years in infrastructure support or support engineering in SLA-driven environments.
• Clear written notes and reliable follow-through.
• Hands-on GPU infrastructure experience with nvidia-smi or similar.
• Strong Linux CLI skills and basic networking tools.
• Knowledge of IP addressing, subnets and VLANs.
• Experience with ITSM processes and ticketing.

Responsibilities

• Handle day-to-day tickets and alerts; escalate early with guidance.
• GPU node triage and hardware troubleshooting; prepare vendor RMA evidence.
• Run fabric and link diagnostics; capture evidence for handover.
• Assist storage and data-path investigations on high-performance platforms.
• Record and resolve tickets with clear customer communications.
• Participate in on-call and travel to customer locations as required.

Skills

Infrastructure support

Communication

GPU hardware troubleshooting

BMC management

Linux CLI

Networking basics

ITSM processes

Observability basics

Scripting: Bash

Scripting: Python

Git version control

Platform & DC fundamentals

Adaptability

Growth mindset

Tools

nvidia-smi

NetBox

Job description

What You'll be Doing

• Join the Support duty rotation and handle day-to-day tickets and alerts, escalating early and appropriately. Collaborate with Engineering, with guidance, when incidents or changes require it
• Perform GPU node triage and hardware troubleshooting: interpret nvidia-smi/DCGM output and system logs, isolate faults across GPU, NIC, and server hardware, carry out physical remediation (reseats, swap testing, component checks), and prepare clean evidence for vendor RMA
• Run fabric and link diagnostics following established runbooks (mlxlink orequivalent), capture evidence accurately, and escape with a handover that lets the next engineer continue without starting from scratch
• Assist with storage and data-path investigations (mounts, connectivity, client-side symptoms) on high-performance platforms, gathering evidence for Senior or Engineering-led diagnosis
• Follow established runbooks to resolve common issues; propose improvements and contribute incremental fixes with review
• Accurately record, update, manage, and resolve tickets, keeping all parties informed with clear notes, next steps, and customer communications via the agreed channels
• Participate in monitoring, troubleshooting, and triage. Capture logs and facts to enable efficient handover
• Participate in changes under peer review, learning risk assessment and backout practices in live customer environments
• Help maintain source-of-truth accuracy across DCIM, inventory, and asset records (NetBox or similar patterns)
• Identify opportunities for automation and contribute simple scripts and tooling improvements to optimise processes
• Be the escalation point for onsite DC Operations staff; coordinate smart- hands tasks within your scope
• Learn the Platform fundamentals so you can help customers get value from our services, asking for support when deeper expertise is needed
• Share knowledge by documenting steps you've validated and contributing to training materials.
• Take part in incident reviews as a contributor and help track preventative follow-ups in your scope
• Deliver assigned tasks and project work to agreed quality and timelines. Flag blockers early and seek help when needed
• Participate in on-call and out-of-hours work when scheduled and after onboarding. Travel to Nscale or customer locations to assist with deployments, troubleshooting, and operational tasks, and attend supplier training as required.

About You

• Experience. 3+ years in infrastructure support or support engineering, including support/service desk experience in structured, SLA-driven, customer-facing environments (cloud, data centre, or managed services)
• Communication. Clear written notes, concise updates, and reliable follow- through. Able to explain technical issues accurately to customers and colleagues, and produce handovers the next shift can act on immediately
• GPU and hardware troubleshooting. Working knowledge of GPU infrastructure: hands-on with nvidia-smi or similar diagnostics, comfortable interpreting hardware error output and logs, and confident physically troubleshooting servers - reseating components, swap testing, working via
• BMC/out-of-band management - through to preparing RMA evidence. A strong technical base here is required, not a learning goal
• Linux. Solid working knowledge: confident on the CLI with systemd, filesystems, permissions, and standard networking tools. Able to troubleshoot common issues independently and know when to escalation
• Networking. Solid grasp of IP addressing, subnets, VLANs, routing, DNS, and firewalls. Awareness of high-performance east-west fabrics (RDMA/InfiniBand concepts) is a plus and a core growth area in this role
• Ticketing and ITSM discipline. Experience working within structured support processes (ITIL or similar): prioritisation, escalation, SLA awareness, and accurate documentation
• Observability foundations. Able to use dashboards and alerts to identify symptoms, gather evidence, and follow runbooks. Comfortable proposing simple alert or dashboard improvements with review
• Scripting and automation basics. Comfortable reading and writing simple Bash or Python, and using Git for version control
• Platform and DC fundamentals. Understanding of servers, networks, storage, and virtualisation concepts, ideally from a support or operations background
• Growth mindset. Curious, dependable, and collaborative. You seek feedback, ask questions, and invest in learning to progress toward Senior
• Adaptability. Able to work in a fast-moving environment with evolving processes, participate in on-call after onboarding, and travel when needed