--- title: Technology pagination_prev: structure/product pagination_next: structure/operations description: Technology purpose, teams and responsibilities in Eldorado’s operating model. --- **Purpose:** build and operate a secure, reliable marketplace and improve the effectiveness of engineering. | Team | Responsibilities | | --- | --- | | Product Engineering | Build and maintain marketplace capabilities, including search, orders, seller tools, checkout, wallet and operational tooling. | | Platform & IT | Platform services, delivery infrastructure, observability, reliability, performance, internal systems, employee devices and identity administration. | | Architecture & Security | Technical standards, system design, security architecture and secure engineering practices. | | Quality Engineering | Test strategy, automation, release quality and defect prevention. | | Data & AI | Analytics, experimentation, ranking, recommendations, marketplace ML and safe AI-assisted engineering workflows. | The CTO owns technology direction. The Head of Engineering leads engineering delivery through Group Engineering Managers and Engineering Managers. The AI Architect coordinates AI enablement within Data & AI, working with Architecture & Security and the other Technology teams. These are leadership roles within the five-team structure, not additional teams. [Return to Structure overview](../structure.mdx)