Strong command of frontend architecture, state management, and visualization frameworks (e.g., React Query, Redux, D3, Plotly) as well as backend/API engineering (RESTful or GraphQL APIs, authentication/authorization, event-driven workflows, background jobs). Design and maintain clean, scalable APIs between the core LLM orchestration layer and the platform, working closely with the Head of AI's team to expose model outputs as trustworthy, user-ready insights.