24/7 HPC Infra SRE for AI & GPU Compute

Radiant; Gloucester; On-site; GBP 90,000 - 120,000; Full time

Job summary

Radiant is seeking a senior Infrastructure Site Reliability Engineer to own and improve large‑scale GPU‑accelerated HPC infrastructure in a 24/7 production environment.

You will work across network, storage, virtualization and orchestration with hands‑on Linux expertise, NVIDIA GPU ecosystems, RoCE/InfiniBand, and performance benchmarking.

This role champions observability, automation and on‑call reliability, shaping next‑gen HPC platforms within a globally distributed team.

Qualifications

• Experience operating large-scale distributed HPC environments.
• Strong Linux and system troubleshooting skills.
• Hands-on experience with GPU-accelerated HPC and AI infrastructure.

Responsibilities

• Operate and improve high-density AI/HPC infrastructure in a 24/7 production environment.
• Participate in a 24x7x365 on-call rotation.
• Drive CSI initiatives to reduce toil and improve reliability and observability.

Skills

GPU HPC

Linux

On‑call experience

Distributed systems

Networking

Performance benchmarking

Tools

NVIDIA GPU ecosystems

RoCE/InfiniBand

Virtualization

Orchestration

Job description

Radiant is seeking a senior Infrastructure Site Reliability Engineer to own and improve large‑scale GPU‑accelerated HPC infrastructure in a 24/7 production environment.

You will work across network, storage, virtualization and orchestration with hands‑on Linux expertise, NVIDIA GPU ecosystems, RoCE/InfiniBand, and performance benchmarking.

This role champions observability, automation and on‑call reliability, shaping next‑gen HPC platforms within a globally distributed team.