East London HPC Data Centre Operations Engineer

Radiant; Greater London; On-site; GBP 70,000 - 110,000; Full time

Benefits offered by this job

On-site in East London

Exposure to NVIDIA GPU AI hardware

Global, multi-discipline engineering

Job summary

Radiant in East London is building an AI infrastructure site and seeks a Datacentre Operations Engineer to execute on-the-ground hardware tasks and ensure uptime for high-density compute across East London facilities.

You will work with SRE, Network Engineering, and Datacentre Strategy teams to deploy, maintain, and troubleshoot GPU/CPU platforms, cooling, and power, driving operational excellence while scaling across the region.

Qualifications

• Degree in Computer Science or Electrical Engineering, or 5+ years of directly relevant data centre operations experience.
• 3+ years of experience in data centre operations, HPC, or related roles.
• Strong communication skills in English.
• Proven hands-on experience with HPC/NVIDIA GPU platforms or equivalent high-density compute systems.

Responsibilities

• Diagnose and resolve hardware and network issues to maximise uptime; execute structured fault isolation methodologies to drive rapid resolution
• Respond to critical hardware alerts via our monitoring and observability platform; contribute to ongoing service improvement to improve monitoring capability and alert quality
• Deploy and maintain HPC and AI hardware for uninterrupted operations, including hardware troubleshooting, firmware updates, and component replacement
• Execute break/fix procedures for advanced hardware platforms, including GPU module exchange, component-level fault isolation, and firmware-level diagnostics
• Execute or support break/fix operations on ultra-high-density compute systems including NVIDIA B300-class chassis or equivalent platforms, including GPU/fan module exchange, chassis-level fault isolation, and busbar connection/disconnection—under the direction of the Lead where qualification is in progress
• Operate, monitor, and maintain high-density air cooling infrastructure in conjunction with our datacentre partner, including CRAC/CRAH units, in-row and containment cooling, and associated airflow management systems
• Facilitate in conjunction with our datacentre partner, routine and corrective maintenance on air cooling systems: monitoring supply/return temperatures and airflow rates, maintaining hot-aisle/cold-aisle containment and blanking, and performing scheduled filter and component inspections
• Follow and contribute to SOPs for safe working around high-density, air-cooled compute platforms
• Monitor thermal performance and raise anomalies before they elevate into incidents
• Contribute to site-level capacity management operations, maintaining accurate records of power, space, and cooling utilisation
• Support capacity planning activities by providing accurate as-built data and flagging infrastructure changes to the Lead and relevant teams
• Manage on- ground assets from point of purchase and delivery through lifecycle management and disposal, owning asset management within Radiant's CMDB system
• Handle RMAs and support requests within Radiant's Service Level Objectives (SLOs) to meet customer contract SLAs
• Contribute to ongoing maintenance, fostering compliance and leveraging strong vendor partnerships
• Operate cooling, power distribution (including busbar and PDU infrastructure), and other critical data centre technologies to maintain high operational standards
• Develop and maintain datacentre/hardware management SOPs, ensuring continual alignment with Radiant's governance and compliance requirements
• Apply ITSM frameworks: Incident, Major Incident, Change Management, and service improvement
• Operate and support services 24x7x365 for production environments as part of a structured on-site shift rotation—working 12-hour shifts across a 4-team pattern with two engineers on shift at all times—to meet tight customer SLAs
• Prioritise and triage incident and smart-hands workload ensuring tight SLA coverage is maintained with a small on the ground team
• Contribute to Incident postmortem analyses, root cause analysis, document learnings, and automate remediations
• Communicate technical decisions clearly to stakeholders and customers
• Champion a culture of: do, document, automate
• Willing to cross train and upskill in Infrastructure/Platform SRE practices
• Willing to travel across EMEA to support future datacentre onboarding and train in new technologies

Job description

Radiant in East London is building an AI infrastructure site and seeks a Datacentre Operations Engineer to execute on-the-ground hardware tasks and ensure uptime for high-density compute across East London facilities.

You will work with SRE, Network Engineering, and Datacentre Strategy teams to deploy, maintain, and troubleshoot GPU/CPU platforms, cooling, and power, driving operational excellence while scaling across the region.