Senior/Principal Product Manager - Security

Radiant; United Kingdom; On-site; GBP 110,000 - 170,000; Full time

Job summary

Radiant is seeking a Senior/Principal Product Manager - Security to own strategy, roadmap, and delivery of security capabilities across our cloud platform. You’ll work across IAM, access control, secrets, encryption, auditability, and compliance, partnering with engineering, SRE, security, and customers.

This is a highly technical product role focused on scalable, automated security across the platform. You’ll collaborate on secure-by-design architecture, policy enforcement, and security

Qualifications

• Experience owning technical products in cloud security or infrastructure.
• Strong understanding of modern cloud and infrastructure security.
• Familiar with IAM, RBAC, SSO, federation, and related controls.
• Knowledge of Kubernetes, containers, cloud networking, compute, storage.
• Experience with APIs, automation, policy-as-code, IaC.
• Familiar with Vault, OPA, SPIFFE/SPIRE, and SIEM tools.

Responsibilities

• Own strategy, roadmap, and delivery for security products and platform capabilities.
• Define experience across IAM, secrets, encryption, audit logging, network controls.
• Translate requirements into APIs, workflows, priorities.
• Partner with engineering and security on secure-by-design architecture.
• Drive customer-facing security capabilities and governance.
• Improve automation around policy enforcement and posture.
• Define success metrics across security coverage and trust.
• Evaluate build vs buy vs partner for cloud security.

Skills

Technical product ownership

Cloud security

IAM / RBAC

Developer security tooling

Security-focused product thinking

Tools

Vault

OPA

SPIFFE/SPIRE

Kubernetes security tooling

SIEM

Cloud KMS

Job description

About our team:

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 product 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.

Job Summary:

As a Senior/Principal Product Manager - Security, you will own the strategy, roadmap, and delivery of Radiant's security capabilities across the cloud platform.

You'll work across identity, access control, secrets, network security, platform hardening, auditability, compliance controls, and customer-facing security features, partnering closely with engineering, infrastructure, SRE, networking, security, compliance, and customers.

This is a highly technical product role focused on making security embedded, scalable, automated, and easy to consume across the platform.

Key Responsibilities:

• Own the strategy, roadmap, and delivery for security products and platform capabilities.


• Define the product experience across IAM, RBAC, secrets, encryption, audit logging, network controls, and policy management.


• Translate customer, regulatory, and internal security requirements into clear product requirements, APIs, workflows, and priorities.


• Partner with engineering and security teams on secure-by-design architecture, controls, automation, and platform hardening.


• Drive customer-facing capabilities for access control, security visibility, compliance evidence, and governance.


• Improve automation around policy enforcement, configuration, detection, remediation, and security posture.


• Work with commercial and customer-facing teams on enterprise security requirements and security reviews.


• Define success metrics across control coverage, adoption, security posture, operational overhead, and customer trust.


• Evaluate build vs. buy vs. partner decisions across the cloud security ecosystem.

Qualifications:

• Experience owning technical products, cloud security products, infrastructure platforms, IAM, or developer-facing security tooling.


• Strong understanding of modern cloud and infrastructure security.


• Strong technical fluency across:
  
  
  
  • Identity & access: IAM, RBAC, SSO, federation, service identities
  
  
  • Security controls: encryption, secrets management, key management, policy enforcement
  
  
  • Infrastructure: Kubernetes, containers, cloud networking, compute, storage
  
  
  • Security operations: logging, audit trails, detection, vulnerability management
  
  
  • APIs & automation: policy-as-code, infrastructure-as-code, security integrations
  
  
  
  


• Familiarity with technologies such as Vault, OPA, SPIFFE/SPIRE, Kubernetes security tooling, SIEM platforms, cloud KMS, or similar.


• Strong understanding of multi-tenancy, least privilege, zero-trust principles, threat models, and shared-responsibility models.


• Able to balance security, usability, operational complexity, and customer experience.


• Strong prioritisation, communication, and stakeholder management skills.

What you bring:

• Security mindset: Understand risk and controls without losing sight of product usability.


• Product thinking: Turn security requirements into clear, scalable platform capabilities.


• Technical fluency: Work credibly across identity, infrastructure, networking, APIs, and distributed systems.


• Customer empathy: Understand the security expectations of enterprise and technical buyers.


• Systems thinking: Understand how controls interact across the full cloud platform.


• Ownership: Drive security capabilities from discovery through launch, adoption, and iteration.

Our values:

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.

Why should you join us?

What sets us apart is our blend of modern technology, competitive benefits, and an open, w