Senior Cloud Fabric Architect for AI/HPC Networking

Devopsroles; Reading; Hybrid; GBP 120,000 - 190,000; Full time

Job summary

NVIDIA seeks a Senior Network and Fabric Operations Solutions Architect to lead Day 2 fabric operations for large GPU estates, owning NVLink/NVSwitch partitions and multi-tenant workflows. You will drive switch OS lifecycles, validation, and production readiness across InfiniBand, UFM and Spectrum Ethernet environments.

The role combines hands-on technical leadership with strategic guidance, engaging with customers and partners while shaping architecture, telemetry and runbooks for scalable,

Qualifications

• BS/MS/PhD in Computer Science, Electrical/Computer Engineering, Physics, Mathematics, or related fields, or equivalent experience.
• 5+ years of professional experience in data centre networking, fabric engineering or large-scale network operations roles.
• Fabric & Data Centre Networking: Deep understanding of data centre network architectures and RDMA fabrics - InfiniBand and RoCE/Ethernet, including topology and routing design (fat-tree, rail-optimised), congestion control, lossless/QoS configuration, and troubleshooting across NICs, switches and high-speed interconnects.
• NVIDIA Fabric Technologies: Hands-on experience with InfiniBand and UFM, Spectrum-X Ethernet, Cumulus Linux and/or SONiC, ConnectX and BlueField NICs/DPUs, and NVLink/NVSwitch systems - ideally including NMX-C / NMX-M partition operations on NVL72-class platforms.
• Linux & Switch Platforms: Deep knowledge of Linux (RedHat, Ubuntu) and switch operating systems, network OS internals, host networking and OS-level security, together with an understanding of the storage and compute traffic patterns of HPC/AI clusters.
• Automation, GitOps & Observability: Proficiency in Python and Bash scripting, configuration management and Infrastructure-as-Code tools (e.g. Ansible, Terraform), GitOps-based network configuration and firmware/upgrade management for large fleets, and observability stacks (Grafana, Loki, Prometheus) applied to fabric telemetry.
• Fleet Reliability & Customer Engagement: Demonstrated ability to measure and improve MTBI and job goodput on large GPU clusters - fault detection, drain and remediation workflows, SLO/error-budget definition and post-incident review, combined with a strong consultative background leading architectural reviews and presenting to executive stakeholders.

Responsibilities

• Own Day 2 fabric operations across NCP fleets: NVLink/NVSwitch partition management (NMX-C / NMX-M) on GB200/GB300 NVL72-class systems, maintenance-partition isolation, and safe partition-change workflows for multi-tenant estates.
• Own the switch software and firmware lifecycle - Cumulus Linux, SONiC and switch-OS upgrades, CPLD and field-notice rollout campaigns, with staged, tested upgrade plans that keep partner fabrics off stale releases without disrupting production workloads.
• Support Day 1 fabric validation and acceptance: InfiniBand and UFM bring-up, Spectrum-X/RoCE Ethernet configuration, cabling and link-health verification, routing and congestion-control validation, and multi-day, multi-rack burn-in against agreed MTBI and goodput targets.
• Minimise the time from cluster handover to first production workload, removing duplicated fabric validation across hardware bring-up, managed-service intake and the partner’s own network operations teams.
• Drive fabric reliability at fleet scale: telemetry for link flaps, retransmits and congestion, fault detection through to remediation, root-cause analysis of network-induced job failures, and measurable improvement of MTBI and job goodput.
• Provide consultative guidance and hands-on troubleshooting across the fabric stack - NICs and DPUs, switch OS, routing and congestion control, host networking and Kubernetes network integration, and act as the technical leader for assigned accounts, running structured knowledge transfer and producing runbooks so partner teams can operate advanced fabric configurations independently.

Skills

Data centre networking

Fabric engineering

Large-scale network operations

InfiniBand/RDMA

Linux networking

Python scripting

GitOps / IaC

Observability tooling

Customer engagement

Networking design

Education

BS/MS/PhD in CS/EE/Physics

Tools

Cumulus Linux

SONiC

Kubernetes

Prometheus/Grafana

NVLink/NVSwitch

InfiniBand/UFM

Job description

NVIDIA seeks a Senior Network and Fabric Operations Solutions Architect to lead Day 2 fabric operations for large GPU estates, owning NVLink/NVSwitch partitions and multi-tenant workflows. You will drive switch OS lifecycles, validation, and production readiness across InfiniBand, UFM and Spectrum Ethernet environments.

The role combines hands-on technical leadership with strategic guidance, engaging with customers and partners while shaping architecture, telemetry and runbooks for scalable,