Principal AI Infrastructure Security Engineer

Company: Radiant
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Job Description:

Radiant is seeking a Principal/Staff Security Engineer to join its Infosec team in the UK. This hands-on role reports to the VP Information Security and focuses on securing production environments, firewall policies, Kubernetes, and access controls across data centre operations.

You will build internal penetration testing capability, collaborate with external testers, and work with engineering teams to ensure robust security testing and governance.

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Posted: October 21st, 2026