Principal Security Engineer, Cloud & IAM

Radiant in the United Kingdom seeks a Principal Software Engineer - Security to set the technical direction of Radiant's security across the cloud platform and infrastructure, delivering scalable, automated security solutions. You will design and build core services for IAM, access control, encryption, auditability, and policy enforcement, and partner with product, SRE, networking, and compliance teams.

The role requires Go or similar languages, deep distributed-systems experience, and a track