---
title: 'Head of Security Operations at Radiant'
canonical: 'https://feeny.ai/job/head-of-security-operations-radiant-london-q5hzh6p08yym'
type: 'job'
last_seen: '2026-10-18'
---

# Head of Security Operations at Radiant

- **Company:** Radiant
- **Location:** London, United Kingdom
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-09-16
- **Last confirmed live:** 2026-10-18
- **Apply:** https://jobs.ashbyhq.com/radiant/e6a420d6-076d-4235-b020-b235cc2c25b4

## Job description

## About Radiant

Radiant is redefining how AI infrastructure is built. We design and operate AI-native infrastructure platforms engineered for sovereignty, performance, and scale - powering GPU-native workloads, multi-tenant control planes, and high-performance AI systems for the most demanding environments. We are building purpose-built AI infrastructure from powered land, to compute, to software. As we scale our operations and deploy capital into the next generation of AI infrastructure, we are looking to expand our security team with leaders who can combine technical strength with execution excellence and are driven to build. Radiant was established by Brookfield, a leading global alternative asset manager with over US$1 trillion of assets under management across real estate, infrastructure, renewable power and transition, private equity and credit. Brookfield's global relationships, investment expertise and access to long-term institutional capital provide Radiant with a differentiated platform from which to develop, finance and operate AI infrastructure assets. This combination of entrepreneurial execution and institutional sponsorship enables Radiant to pursue large-scale GPU and AI infrastructure opportunities globally.

## About the Role

Location: London, UK | Employment Type: Full-time, Permanent | Reports to: Chief Customer Officer We're looking for a Head of Security Operations to build Radiant's security function from the ground up. This is a founding role where you’ll help to define the strategy, tooling and operating model for security across our data centres, compute platform and network fabric. You will also represent Radiant's security posture directly to customers and prospects who are evaluating us for their AI workloads. You will work closely with our Commercial, Compliance and Engineering teams, coordinating on shared risk reporting, security testing and audit evidence.

## What You'll Do

Security Strategy & Leadership:

- Build and own Radiant's security strategy from the ground up, including policy, standards and risk posture for customer-facing infrastructure.
- Develop our security practices, governance, risk and reporting
- Define the roadmap and maturity targets for the function.
- Build the hiring plan and business case for the SecOps team as it scales.

Customer-Facing Security & Trust:

- Contribute to Radiant's Trust Center as the primary resource for customers evaluating our security posture.
- Lead security input into customer due diligence, RFPs and technical evaluations, particularly for sovereign and regulated deployments.
- Represent Radiant directly with customers and prospects on security matters as part of the sales and onboarding process.
- Audit customer deployments for alignment to agreed security specs

Data Centre & Infrastructure Security:

- Source, deploy and operate security tooling for the Radiant DCs.
- Lead physical, environmental and infrastructure-layer security across Radiant's data centre sites.
- Manage site-level risk including access control, surveillance, third-party and vendor access, and environmental controls.
- Bring hands-on data centre security expertise; this is a core requirement for the role.

Engineering Partnership:

- Define and own the tools strategy for the SecOps team. Collaborate with CTO and InfoSec teams to build/buy the necessary tooling.
- Build support across Engineering, Platform and Product for the security practice.
- Embed security into how Radiant designs and ships infrastructure without slowing delivery.

Governance, Testing & Collaboration:

- Partner with the VP InfoSec on shared risk reporting, security testing (internal drills, external pentest) and audit evidence gathering.
- Develop security culture, development and training for the organisation.
- Maintain a clear division of ownership with the VP InfoSec, with regular collaboration expected across both domains.

Incident Response & Resilience:

- Own incident response and crisis management when customer-facing infrastructure is affected.
- Run post-incident reviews and use them to drive resilience improvements.
- Communicate directly with customers during major incidents when required.

## What You'll Bring

- Hands-on data centre security expertise, covering physical, environmental and infrastructure-layer security, gained in large-scale, high-availability environments.
- Experience building a security function or SOC from the ground up, without an inherited team or toolset.
- Experience representing security directly to customers and prospects, including at executive level.
- Strong stakeholder management skills across engineering leadership without relying on formal authority.
- Experience working alongside a peer GRC/Infosec function with clearly defined but collaborative boundaries.
- Experience owning incident response and resilience programmes at scale.

## Nice to Have

- Experience securing AI-native, GPU-accelerated or HPC infrastructure specifically.
- Background in telecom, hyperscale cloud or colocation data centre operators.
- Familiarity with sovereign or regulated infrastructure security requirements.
- Experience with customer-facing security assurance processes such as RFPs, due diligence and trust centers.

Why Join Radiant?

- Build and own a new function at a rapidly scaling AI infrastructure business, with a genuine mandate to shape it.
- Work directly with Radiant's Customer Office leadership and C-suite, with real influence over how the company secures and sells its platform.
- Be part of a team whose work protects the infrastructure powering sovereign and enterprise AI deployments globally.
- Develop your career in a Brookfield backed company with resources, mentorship and genuine growth opportunities.

## About Radiant

## Company Overview
- **One-liner**: Radiant is a vertically integrated AI infrastructure company that builds and operates AI factories combining utility-scale powered land, long-term capital, and a proprietary software platform.
- **Entity Type**: Private (portfolio company of Brookfield’s AI Infrastructure Fund)
- **Headquarters**: London, United Kingdom
- **Founded**: 2026 (formed via merger of Brookfield’s Radiant entity with Ori Industries)
- **Founders**: Mahdi Yahya (Founder & former CEO of Ori, now President of Radiant)

## Core Business
- **Primary industry**: AI Infrastructure / Cloud Computing / Data Centers
- **Target customers**: Sovereign governments, large enterprises, telecommunications providers (B2B, Enterprise, Sovereign)
- **Mission or purpose statement**: “Building the utility model for AI compute — ubiquitous, always on and offering superior economics. That model will power the intelligence revolution — giving every nation, enterprise and network the foundation to build what comes next.” [radiant.co](https://radiant.co/about)

## Products & Services
- **Radiant AI Cloud**: On-demand AI compute platform offering pre-configured bare metal offerings, GPU instances, and AI-as-a-Service offerings including Inference, Fine-Tuning, Model Registry, Kubernetes, and high-performance Storage.
- **AI Factories (Sovereign/Enterprise Deployments)**: Purpose-built, vertically integrated AI data centers built on the NVIDIA DSX reference design, offering utility-grade economics under long-term contracts for sovereign governments and select enterprises.
- **Powered Land Portfolio**: Access to over 5 GW live and 45 GW of renewable generation capacity globally — enabling rapid deployment of massive AI compute clusters at 20% below-market power costs through a mix of hydro, wind, geothermal, biomass, and dispatchable natural gas. [radiant.co](https://radiant.co/)
- **Proprietary Software Platform**: Dependency-free, lightweight architecture built on engineering first principles, featuring intelligent scheduling, automated node management, secure multi-tenancy, and a distributed control panel. Scales consistently from 10K to 100K+ GPUs.

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed as a private entity. Backed by Brookfield with access to a $100 billion investment program for AI Infrastructure (Brookfield AI Infrastructure Fund).
- **Key Metric**: Total funding — Backed by Brookfield, with “more than $100 billion in deployable capital” available to the fund. Radiant is the first compute deployment vehicle and second seed investment for Brookfield’s AI Infrastructure Fund. [radiant.co](https://radiant.co/press-release-launch)
- **Notable Investors/Partners**: Brookfield (global alternative asset manager), NVIDIA (Cloud Partner — using NVIDIA Blackwell, GB200 NVL72, and upcoming Rubin architectures)
- **Growth Signals**: Recently launched (February 24, 2026) via merger of Radiant and Ori Industries. Targeting the multi-trillion market for integrated AI factories over the next decade. Rapidly expanding Ori’s integrated AI Cloud assets with the latest NVIDIA platforms.

## Competitive Advantages
- **Vertically Integrated Model**: Uniquely combines capital (Brookfield), powered land (5 GW live, 45 GW renewable capacity), proprietary software (built from first principles), and compute (NVIDIA partnership) into a single platform — “from silicon to service.”
- **Cost Advantage**: 20% below-market power costs through a balanced energy mix.
- **Capital Advantage**: Direct pipeline to $100B+ investment program, enabling massive, long-duration projects that competitors cannot match.
- **NVIDIA DSX Reference Design**: First-mover advantage in deploying at scale using NVIDIA’s latest architectures (Blackwell, Rubin) with full design and operational ownership.
- **Sovereign Focus**: Positioned as a partner for nations seeking AI infrastructure independence — a growing geopolitical priority.

## Strategic Focus
- **Scale AI Factories Globally**: Rapidly deploy AI compute capacity using the NVIDIA DSX reference design for sovereign governments, enterprises, and telecoms under long-term contracts.
- **Expand the Ori Global AI Cloud**: Continue to grow the on-demand AI cloud for customers needing rapid deployment and flexible capacity.
- **Maintain Vertical Integration**: Control every layer from capital and energy to software and hardware, ensuring operational autonomy and superior economics.
- **Long-term Planning**: Aligned with the long-term demands of the AI economy — thinking in decades, not quarters.

## Why Work Here
- **Culture**: “Outcome oriented” — the company values people who get things done, dream bigger, think in longer timelines, and build the assets that make every other ambition possible. [radiant.co](https://radiant.co/about)
- **Remote/Hybrid Policy**: Flexible work options, including remote and hybrid arrangements.
- **Compensation**: Competitive compensation with performance-based incentives and meaningful stock options.
- **Benefits**: Learning and development support, family-friendly policies with paid parental leave, generous vacation and company holidays.
- **Engineering Culture**: Led by CTO Chris Galloway (previously CTO at Ori, with experience at Broadcom/Symantec) and VP Product Joao Coelho (former AWS Solutions Architect, co-founder of open-source Multy). The team is building a proprietary, dependency-free software platform from first principles — appealing to engineers who want deep technical ownership.
- **Growth Opportunity**: Early-stage (launched Feb 2026) with massive capital backing — employees can shape the company’s trajectory and work on infrastructure at unprecedented scale (10K to 100K+ GPUs).
- **Hiring**: Actively hiring across every department. [radiant.co](https://radiant.co/about)

## Sources
1. [radiant.co - Homepage](https://radiant.co/)
2. [radiant.co - About Page](https://radiant.co/about)
3. [radiant.co - Press Release Launch](https://radiant.co/press-release-launch)
4. [Tech.eu - Radiant and Ori Merge](https://tech.eu/2026/02/24/radiant-and-ori-merge-to-deliver-sovereign-ai-cloud-at-utility-scale/)
5. [radiant.co - Blog: The Age of Abundance in AI](https://radiant.co/blog/the-age-of-abundance-in-ai)

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