Founding Engineer: AI Payments & Platform Architect

Ralio, London-based payments layer for AI agents, is hiring founding engineers to architect our codebase and guide engineering culture from the ground up. Hybrid in London with an office in Shoreditch, you will design high-throughput payment integrations, robust guardrails, and scalable systems to prevent fraudulent transactions.

You will own end-to-end delivery across architecture, APIs, frontend, and deployment, shape the technical vision, and operate as both engineer and product thinker in a