Platform Engineer, AI Security Platform — Hybrid London

Refractal Ltd, a London-based AI security company, seeks a product-minded platform engineer to own core APIs and SDKs from data model to customer integration. You will build and operate enforcement services, authentication layers, and multi-tenant controls while collaborating with founders and early customers.

Key contributions include API design, versioning, and secure customer interfaces, plus building real‑time data streams and a tamper-evident audit ledger.

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