Senior GPU Infra Engineer — Remote

Nscale; Seattle (WA); On-site; USD 120,000 - 170,000; Full time

Benefits offered by this job

Remote-first culture

Equity plan

Flexible workplace

Job summary

Nscale is seeking a Senior Infrastructure Support Engineer to own the health of GPU fleets and high-performance fabrics in a hands-on L2/L3 role. You will operate across GPU hardware, Linux, and data centre operations—bridging Support, DC Ops, and Engineering to ensure reliability.

Responsibilities include incident escalation, diagnostics across the full stack, automation, and mentoring mid-level engineers. On-call travel to sites may be required.

Qualifications

• 6+ years in infrastructure, operations, or support engineering in production environments.
• 2–3+ years hands-on with GPU, HPC, or large-scale data centre estates, ideally in customer-facing or escalation-driven capacity.
• Strong written discipline: notes should let the next engineer pick up where you left off.

Responsibilities

• Join the Support duty rotation as a senior escalation point, collaborating with Infrastructure Engineering, CNPRE, Network Operations, and Product Engineering on incidents, investigations, and changes.
• Diagnose and remediate GPU node faults across the full stack—driver, firmware, and hardware layers—from nvidia-smi/DCGM and XID/RAS analysis through BMC/Redfish and out-of-band management to physical fault isolation and vendor RMA.
• Own east-west fabric health: run link-level diagnostics (mlxlink, ibdiagnet or equivalent), isolate transceiver, optics, cabling, and switch-port faults, and validate topology across InfiniBand and RoCE/high-speed Ethernet fabrics.
• Investigate data-path issues on high-performance storage platforms (e.g. VAST), including storage–network interactions across clients, mounts, VIPs, and routing.
• Run structured, hypothesis-driven investigations; conduct root cause analysis for major incidents and drive long-term fixes to completion.
• Author and execute changes in live customer environments with proper risk assessment, peer review, and backout plans.
• Proactively improve dashboards, alerts, and runbooks to prevent repeat incidents; identify recurring patterns and convert them into problem records and automation.
• Accurately record, update, and resolve tickets, keeping internal and external parties informed with clear customer-impact statements and evidence-rich notes that enable clean handover.
• Design and implement automation scripts and small tools to reduce toil and human intervention.
• Act as a key escalation point for the Support Organisation, taking ownership of strategic decisions where results matter.
• Mentor and upskill mid-level engineers; contribute to knowledge sharing across Operations and Engineering, including training content, workshops, and PR reviews.
• Lead by earning trust and speaking candidly. Disagree when appropriate and challenge the status quo; commit wholly to decisions once in motion.
• Respond to critical incidents out of business hours and participate in on-call as required. Travel to Nscale or customer sites to provide onsite technical expertise.

Skills

GPU HPC expertise

Linux systems engineering

Networking fundamentals

SRE & incident response

Automation scripting

Leadership mentoring

Communication skills

Data centre operations

Tools

nvidia-smi

DCGM

Redfish

mlxlink

ibdiagnet

MAAS

Job description

Nscale is seeking a Senior Infrastructure Support Engineer to own the health of GPU fleets and high-performance fabrics in a hands-on L2/L3 role. You will operate across GPU hardware, Linux, and data centre operations—bridging Support, DC Ops, and Engineering to ensure reliability.

Responsibilities include incident escalation, diagnostics across the full stack, automation, and mentoring mid-level engineers. On-call travel to sites may be required.