Senior Frontend Developer

About the role

We are building a dedicated Generative AI hub for a leading financial services organisation in Valencia. As a Senior Frontend Developer you will be one of the founding engineers, responsible for the user‑facing layer of the Agentic AI platform and delivering intuitive, high‑performance web experiences.

Key responsibilities

• Design and develop production‑grade React applications, including dashboards, document‑intelligence interfaces and advisor portals.
• Create reusable, accessible UI component libraries using React, TypeScript, Tailwind CSS and Storybook.
• Implement real‑time agent interaction interfaces with AG‑UI and A2A protocols, rendering streaming LLM outputs.
• Integrate frontend code with RESTful and event‑driven backend services (Node.js.NET 8, FastAPI).
• Consume and visualise AI‑generated results such as RAG responses, document analysis and agent reasoning traces.
• Implement authentication and RBAC flows via Azure Active Directory and MSAL.
• Deploy applications to Azure App Service and Azure Static Web Apps, and set up observability with Azure Monitor and Application Insights.
• Ensure performance, WCAG accessibility, cross‑browser compatibility and maintain component documentation.

Required profile

• Senior‑level experience building complex React applications in a production environment.
• Proven ability to work in a fast‑moving AI/FinTech setting and collaborate with UX, backend and AI/ML teams.
• Strong understanding of web accessibility standards (WCAG) and performance optimisation.

Required skills

• React 18+, TypeScript
• Next.js or Vite
• React Query, Zustand, Redux Toolkit
• Tailwind CSS, CSS Modules
• Storybook, Jest, React Testing Library, Playwright
• AG‑UI, A2A, MCP protocols
• Azure OpenAI streaming, Azure App Service, Azure Static Web Apps
• Azure Active Directory, MSAL, RBAC
• Azure Monitor, Application Insights
• RESTful APIs, Node.js.NET 8, FastAPI