Senior Manager, Data Center Commissioning

Senior Manager, Data Center Commissioning at Radiant in London, United Kingdom.

Role Summary

Qualities we look for

• Set the standard: Every single day, you spot opportunities to constructively shake things up.
• Inspire the change: There's no blueprint for the future. You'll embrace challenges and change.
• You're real and you're true to yourself: We cherish and celebrate diversity so you'll feel right at home whoever you are and whoever you're talking to, you treat everyone the same.
• Get stuck in: You'd rather be building than overseeing. Our strategy will keep evolving, and so will you — attitude and adaptability matter more to us than a fixed playbook or a big team behind you.

Responsibilities

You'll personally lead commissioning on Radiant's live projects, travelling to whichever site needs you most, and build the handover-to-Operations playbook as you go rather than following one that already exists.

Commissioning

• Lead commissioning activities on-site personally, moving between projects as they reach energisation.
• Build Radiant's commissioning methodology and readiness checklist from scratch.

Handover

• Own the handover package into Operations and personally walk it through with the receiving team.
• Take full ownership of the entire period between build completion and Operations go-live, not just the formal handover point.

Team build

• Build out a pooled commissioning team as project count grows, while remaining hands-on at site level yourself.

Requirements

• Attitude matters more to us here than number of years of experience.
• Hands-on commissioning experience on data centre or mission-critical infrastructure, through to energisation.
• Willingness to travel between live sites at short notice; this is not a desk-based role.
• Comfort building a methodology from experience rather than inheriting a mature one.
• We're hiring for the instinct to catch problems on the floor, not years of managing a commissioning department.
• Full ownership of, or demonstrated hands-on experience across, Level 1 to Level 5 commissioning.

Preferred Skills (Nice to Have)

• Experience with both air-cooled and liquid-cooled (DLC) commissioning.
• Exposure to integrated systems testing (IST) methodology.
• Experience commissioning projects in both Europe and the US.

About the Company

Radiant is redefining how AI infrastructure is built.

We design and operate AI-native cloud platforms engineered for sovereignty, performance, and scale. Our infrastructure powers GPU-native workloads, multi-tenant control planes, and high-performance AI systems designed for the most demanding environments.

We are not building a generic cloud. We are building purpose-built AI infrastructure — from powered land, to compute, to software.

As we scale, we're building this organisation from the ground up. We're looking for people who'd rather build the playbook than inherit one — who are comfortable doing the work themselves as well as directing others, and who can adapt as fast as our strategy does. This is a startup model: attitude and adaptability matter more to us than years of experience or the size of team you've previously managed.

This is a cross-functional role requiring strong technical, commercial, and delivery capabilities, with exposure to executive stakeholders and EPCs, equipment OEMs, and the Operations organisation receiving each completed site.